mention python setup.py install

git-svn-id: https://pyjamas.svn.sourceforge.net/svnroot/pyjamas/trunk@276 7a2bd370-bda8-463c-979e-2900ccfb811e

INSTALL.txt

@@ -5,7 +5,20 @@ Installing Pyjamas
 System Installation
 ===================
 
-XXX
+As usual, run::
+
+ python setup.py install
+
+The commands pyjscompile and pyjsbuild will be installed;
+the boilerplate web templates, the pyjamas "builtin" libraries
+and the UI Widget libraries will be installed as data libraries
+which pyjscompile and pyjsbuild will know about.   The default
+path is:
+
+    {sys.prefix}/share/pyjamas
+
+You can over-ride this default location with the PYJSPREFIX
+environment variable.
 
 Developer Sandbox Setup
 =======================
@@ -21,4 +34,3 @@ To build pyjama apps see ``./bin/pyjsbuild --help``
 
 
 
-