Adding gemspec and updating README to include information about pulli…

…ng from github

README.txt

@@ -22,7 +22,7 @@ it just delegates the methods to the appropriate underlying Java class.
 
 == INSTALL:
 
-jruby -S gem install libxml-jruby
+jruby -S gem install dylanvaughn-libxml-jruby --source=http://gems.github.com
 
 == LICENSE:
 

libxml-jruby.gemspec

@@ -0,0 +1,15 @@
+require 'rake'
+
+Gem::Specification.new do |s|
+  s.name = "libxml-jruby"
+  s.version = "1.0.0"
+  s.date = "2008-09-20"
+  s.summary = "LibXMLRuby compatibility layer for jruby"
+  s.homepage = "http://rubyforge.org/projects/libxml-jruby"
+  s.authors = "Michael Guterl"
+  s.email = "mguterl @nospam@ gmail.com"
+  s.rubyforge_project = "libxml-jruby"
+  s.has_rdoc = false
+  s.platform = "jruby"
+  s.files = FileList['lib/**/*.rb', 'script/**/*', 'tasks/**/*', '[A-Z]*', 'test/**/*'].to_a
+end