Split up files somewhat

Author: kddnewton

bin/bench

@@ -15,7 +15,7 @@ def compare(filepath)
   source = File.read(filepath)
 
   Benchmark.ips do |x|
-    x.report("syntax_tree") { SyntaxTree.new(source).parse }
+    x.report("syntax_tree") { SyntaxTree.parse(source) }
     x.report("parser") { Parser::CurrentRuby.parse(source) }
     x.report("ruby_parser") { RubyParser.new.parse(source) }
     x.compare!