docs: reorganize and improve README installation instructions

- Moved quick start dependencies/install details under a new "Custom install" section.
- Added clarification and refined installer script usage with examples and options.
- Removed redundant quick start overview to streamline content.

Author: RedLeader962

README.md

@@ -47,13 +47,12 @@ The library is written in C++ for efficiency with [bindings in Python](doc/index
 [//]: # (====Supported OS and aarch===============================================================)
 
 ### Supported OS And Architecture
-_libpointmatcher_ is tested on our build system under the following architecture and OS:
-- Ubuntu bionic (18.04), focal (20.04) and jammy (22.04)
-- x86 and arm64/v8
+_libpointmatcher_ is tested on our build system under the following:
+- OS: Ubuntu bionic (18.04), focal (20.04) and jammy (22.04)
+- Computer architecture: x86 and arm64/v8
 
 Note:
-- _libpointmatcher_ reportedly works on MacOs OsX (latest) and Windows (latest)
-
+- _libpointmatcher_ reportedly works on Mac OS X (latest) and Windows (latest)
 
 ---
 
@@ -95,20 +94,15 @@ You can read the latest changes in the [release notes](doc/ReleaseNotes.md).
 
 
 # Quick Start
-Although we suggest to use the [tutorials](doc/index.md), here is a quick version of it:
-
-The library has a light dependency list:
 
- * [Eigen] version 3, a modern C++ matrix and linear-algebra library,
- * [boost] version 1.48 and up, portable C++ source libraries,
- * [libnabo] version 1.0.7, a fast K Nearest Neighbour library for low-dimensional spaces,
-
-and was compiled on:
-  * Ubuntu ([see how](/doc/CompilationUbuntu.md))
-  * Mac OS X ([see how](/doc/CompilationMac.md))
-  * Windows ([see how](/doc/CompilationWindows.md) - partially supported)
+## Docker images
+To install docker related dependencies on ubuntu, execute the following
+```shell
+cd libpointmatcher/build_system/lpm_utility_script
 
-### Docker images
+# Execute docker tools install script i.e. docker daemon, docker compose, docker buildx
+bash lpm_install_docker_tools.bash
+```
 
 Run the following commands to pull and run libpointmatcher in a docker container
 
@@ -122,26 +116,33 @@ See
 available [libpointmatcher image tags](https://hub.docker.com/repository/docker/norlabulaval/libpointmatcher/)
 on dockerhub.
 
-To install docker related dependencies on ubuntu, execute the following
-```shell
-cd ./build_system/lpm_utility_script
 
-# Execute docker tools install script i.e. docker daemon, docker compose, docker buildx
-bash lpm_install_docker_tools.bash
+## Compilation and Installation
+### Installer scripts
+For beginner users unfamiliar with compiling and installing a library in Linux, you can use the provided installer script for ubuntu:
+```shell
+cd libpointmatcher
+bash libpointmatcher_dependencies_installer.bash
+bash libpointmatcher_installer.bash --build-system-CI-install
 ```
+The first script installs all Libpointmatcher dependencies. The second script installs Libpointmatcher.
+The `--build-system-CI-install` flag tell the installer to colocate the build and the repository.
+If you want to install to a different location, instead use the `--install-path </dir/abs/path/>` flag. 
+Use the `--help` flag for more options.
 
+### Custom install
+Although we suggest to use the [tutorials](doc/Compilation.md), here is a quick version of it:
 
-### Compilation & Installation
-
-For beginner users unfamiliar with compiling and installing a library in Linux, go [here](doc/CompilationUbuntu.md) for detailed instructions on compiling libpointmatcher from the source code.
+The library has a light dependency list:
 
-For conveniences, you can use the provided installer script for ubuntu
-```shell
-bash libpointmatcher_dependencies_installer.bash
+ * [Eigen] version 3, a modern C++ matrix and linear-algebra library,
+ * [boost] version 1.48 and up, portable C++ source libraries,
+ * [libnabo] version 1.0.7, a fast K Nearest Neighbour library for low-dimensional spaces,
 
-# Use the --help flag to see the list of optional flag
-bash libpointmatcher_installer.bash [<optional flag>]
-```
+and was compiled on:
+  * Ubuntu ([see how](/doc/CompilationUbuntu.md))
+  * Mac OS X ([see how](/doc/CompilationMac.md))
+  * Windows ([see how](/doc/CompilationWindows.md) - partially supported)
 
 If you are comfortable with Linux and CMake and have already installed the prerequisites above, the following commands should install libpointmatcher on your system.
 
@@ -153,7 +154,7 @@ sudo make install
 ```
 
 
-### Testing
+## Testing
 
 Libpointmatcher ships with a version of the Google testing framework [GTest](https://github.com/google/googletest).  Unit tests are located in the `utest/` directory and are compiled with libpointmatcher (CMake variable `BUILD_TESTS` must be set to `TRUE` before compiling).  To run the tests and make sure that your compiled version is working correctly, run the test executable in your build directory:
 
@@ -162,7 +163,7 @@ cd build
 utest/utest --path ../examples/data/
 ```
 
-### Linking to external projects.
+## Linking to external projects.
 
 We mainly develop for __cmake projects__ and we provide example files under [`examples/demo_cmake/`](https://github.com/norlab-ulaval/libpointmatcher/tree/master/examples/demo_cmake) to help you in your own project. We also provide a __QT Creator__ example in [`examples/demo_QT/`](https://github.com/norlab-ulaval/libpointmatcher/tree/master/examples/demo_Qt), which manually lists all the dependencies in the file [`demo.pro`](https://github.com/norlab-ulaval/libpointmatcher/blob/master/examples/demo_Qt/demo.pro). You would need to ajust those paths to point at the appropriate locations on your system. For a more detailed procedure, check the [Linking Projects to libpointmatcher](doc/LinkingProjects.md) section.