Add first version of ruby bindings.

src/bindings/ruby/hammer-parser.gemspec

@@ -0,0 +1,23 @@
+#encoding: UTF-8
+Gem::Specification.new do |s|
+  s.name          = 'hammer-parser'
+  s.version       = '0.1.0'
+  s.summary       = 'Ruby bindings to the hammer parsing library.'
+  s.description   = s.summary # TODO: longer description?
+  s.authors       = ['Meredith L. Patterson', 'TQ Hirsch', 'Jakob Rath']
+  # TODO:
+  # s.email = ...
+  # s.homepage = ...
+
+  files = []
+  files << 'README.md'
+  files << Dir['{lib,test}/**/*.rb']
+  s.files = files
+  s.test_files = s.files.select { |path| path =~ /^test\/.*_test.rb/ }
+
+  s.require_paths = %w[lib]
+
+  s.add_dependency 'ffi', '~> 1.9'
+  s.add_dependency 'docile', '~> 1.1' # TODO: Find a way to make this optional
+end
+