added delivery package generation

Author: clemy

.gitignore

@@ -1 +1,5 @@
 node_modules/
+
+# files from build
+/prexvis
+/prexvis-*.tgz

README.md

@@ -43,6 +43,32 @@ chrome http://localhost:3000/
 | `./bin/aalwines`              | binary of AalWiNes tool |
 | `./bin/moped`                 | binary of moped tool |
 
+## Building a binary delivery package
+
+Building a package containing a binary delivery can easily be done with the command
+
+```bash
+npm run pack
+```
+
+The delivery package including aalwines, moped, sample data and the prexvis binary is in:
+
+`./prexvis-0.1.0.tgz`
+
+Beside the prexvis tool it includes everything necessary to run it: nodejs, aalwines, moped and sample data.
+
+Unpack it, run the binary and use your browser to go to http://localhost:3000/
+
+```bash
+tar -xzvf prexvis-0.1.0.tgz
+cd prexvis-0.1.0
+./prexvis
+
+# browse to http://localhost:3000/
+```
+
+Own sample data can be added in the directory `data/models`.
+
 ## Optional Requirements
 
 ### PM2 (optional)

app.js

@@ -4,8 +4,11 @@ const path = require('path');
 const http = require('http').createServer(app);
 const io = require('socket.io')(http);
 
-const modelsPath = path.join(__dirname, 'data', 'models');
-const binPath = path.join(__dirname, 'bin');
+console.log('prexvis - Visualization for AaalWiNes');
+console.log('  Version 0.1.0');
+
+const modelsPath = path.join(process.cwd(), 'data', 'models');
+const binPath = path.join(process.cwd(), 'bin');
 const models = require('./backend/models')(modelsPath, binPath, models => {
     io.emit('models', models);
 });
@@ -38,5 +41,6 @@ app.use(function(req, res) {
 });
 
 http.listen(3000, function() {
-    console.log('Listening on port 3000!');
+    console.log();
+    console.log('Start your browser and go to http://localhost:3000/');
 });