Improve example scripts

example/example.post-install

@@ -1,5 +1,6 @@
 #!/bin/bash
 
-echo "  This is a post-install script output."
-echo "  Use it to perform additional tasks after addon installation."
+echo "  This is an example post-install script output."
+echo "  Use post-install hook to perform additional tasks after addon installation,"
+echo "  that can not be performed before addon installation."
 sleep 1

example/example.post-uninstall

@@ -1,5 +1,6 @@
 #!/bin/bash
 
-echo "  This is an example post-uninstall script to perform a cleanup..."
+echo "  This is an example post-uninstall script output."
+echo "  Use post-uninstall to perform a cleanup if needed."
 echo "  Addon code is gone by this moment."
 sleep 2

example/example.pre-install

@@ -1,9 +1,6 @@
 #!/bin/bash
 
 echo "  This is an example pre-install script output..."
-sleep 1
 echo "  Use pre-install shook to check for dependencies or pre-requisites..."
-sleep 2
 echo "  If exit code is non-zero, then addon installation will not continue."
 sleep 2
-exit 0

example/example.pre-uninstall

@@ -1,7 +1,6 @@
 #!/bin/bash
 
 echo "  This is an example pre-uninstall hook output" 
-echo "  Use this hook to ask for additional confirmations or to warn about outcome..."
+echo "  Use pre-uninstall to ask for additional confirmations or to warn about outcome."
+echo "  If exit code will be non-zero, then uninstallation will not happen."
 sleep 2
-echo "  If exit code will be non-zero then uninstallation will not happen..."
-sleep 1