added gemspec

decisiontree.gemspec

@@ -0,0 +1,25 @@
+spec = Gem::Specification.new do |s|
+  s.name = 'decisiontree'
+  s.version = '0.3.0'
+  s.date = '2009-02-21'
+  s.summary = 'ID3-based implementation of the M.L. Decision Tree algorithm'
+  s.description = s.summary
+  s.email = 'ilya@igvita.com'
+  s.homepage = "http://github.com/igrigorik/decisiontree"
+  s.has_rdoc = true
+  s.authors = ["Ilya Grigorik"]
+ 
+  # ruby -rpp -e' pp `git ls-files`.split("\n") '
+  s.files = ["README.rdoc",
+    "examples/continuous-id3.rb",
+    "examples/data/continuous-test.txt",
+    "examples/data/continuous-training.txt",
+    "examples/data/discrete-test.txt",
+    "examples/data/discrete-training.txt",
+    "examples/discrete-id3.rb",
+    "examples/simple.rb",
+    "lib/decisiontree.rb",
+		"lib/id3_tree.rb",
+    "test/test_decisiontree.rb"]
+
+end