fix README instructions

README.md

@@ -1,14 +1,21 @@
 XMLPullParser [![](https://travis-ci.org/GsDevKit/XMLPullParser.svg?branch=master)](https://travis-ci.org/GsDevKit/XMLPullParser)
 =============
-XMLPullParser is a streaming XML parser. Instead of building a DOM tree, the parser streams over "events" (start tag, text, end tag) on demand. For more information on the technique in general, see [xmlpull.org](xmlpull.org). This is a port of the XMLPullParser code found on http://www.smalltalkhub.com/#!/~hernan/XMLPullParser/ to Gemstone/GLASS.
+XMLPullParser is a streaming XML parser. Instead of building a DOM tree, the parser streams over "events" (start tag, text, end tag) on demand. For more information on the technique in general, see [xmlpull.org](xmlpull.org). This is a port of the XMLPullParser code from http://www.smalltalkhub.com/#!/~hernan/XMLPullParser/ to Gemstone/GLASS.
 
 ## Loading into GemStone
 
+Install the latest commit from the master branch:
 ```Smalltalk
 Metacello new
   baseline: 'XMLPullParser';
-  repository: 'github://glassdb/XMLPullParser/repository';
+  repository: 'github://GsDevKit/XMLPullParser:master/repository';
   load.
 ```
-
-[https://travis-ci.org/GsDevKit/XMLPullParser.svg?branch=master]
+
+Install a particular version, e.g. 1.5.0 (see [Releases](https://github.com/GsDevKit/XMLPullParser/releases) for a list of possible versions):
+```Smalltalk
+Metacello new
+  baseline: 'XMLPullParser';
+  repository: 'github://GsDevKit/XMLPullParser:v1.5.0/repository';
+  load.
+```