Add package.json to CommonJS package (rake commonjs).

Use fancy regex to auto-fill the version number.
Closes janl#37.

Rakefile

@@ -28,15 +28,27 @@ def templated_build(name, opts={})
     sh "mkdir -p #{opts[:location]}" if opts[:location]
     sh "cat #{source}/#{target_js}.tpl.pre mustache.js \
      #{source}/#{target_js}.tpl.post > #{opts[:location] || '.'}/#{target_js}"
-    puts "Done, see #{opts[:location] || '.'}/#{target_js}"
+
+    # extra
+    if opts[:extra]
+      sh "cat #{source}/#{opts[:extra]} | sed -e 's/{{version}}/#{version}/' > #{opts[:location]}/#{opts[:extra]}"
+     end
+
+   puts "Done, see #{opts[:location] || '.'}/#{target_js}"
+
   end
 end
 
-templated_build "CommonJS", :location => "lib"
+templated_build "CommonJS", :location => "lib", :extra => "package.json"
 templated_build "jQuery"
 templated_build "Dojo", :location => "dojox/string"
 templated_build "YUI3", :location => "yui3/mustache"
 
+def version
+  File.read("mustache.js").match('version: "([^\"]+)",$')[1]
+end
+
+
 desc "Remove temporary files."
 task :clean do
   sh "git clean -fdx"

mustache-commonjs/package.json

@@ -0,0 +1,7 @@
+{
+    "name": "mustache",
+    "author": "http://mustache.github.com/",
+    "description": "{{ mustache }} in JavaScript — Logic-less templates.",
+    "keywords": ["template"],
+    "version": "{{version}}"
+}