diff --git a/lib/execjs.rb b/lib/execjs.rb
index db7c48f..dbcb992 100644
--- a/lib/execjs.rb
+++ b/lib/execjs.rb
@@ -4,4 +4,16 @@ module ExecJS
   class ProgramError    < Error; end
 
   autoload :Runtimes, "execjs/runtimes"
+
+  def self.exec(source)
+    runtime.exec(source)
+  end
+
+  def self.eval(source)
+    runtime.eval(source)
+  end
+
+  def self.runtime
+    @runtime ||= Runtimes::Node
+  end
 end
diff --git a/readme.md b/readme.md
index 066d367..4bffb5e 100644
--- a/readme.md
+++ b/readme.md
@@ -19,5 +19,5 @@ ExecJS supports these runtimes:
 A short example:
 
     require "execjs"
-    ExecJS.eval "'red yellow blue'.split('')"
+    ExecJS.eval "'red yellow blue'.split(' ')"
     # => ["red", "yellow", "blue"]