Add example and allow all ruby files as spec file

Author: Nick Hwang

examples/mocha.coffee

@@ -0,0 +1,12 @@
+# Mocha
+{ expect } = require('chai')
+
+describe 'Test', ->
+  hello = 'world'
+  lorem = 'ipsum'
+
+  it 'should have correct value for hello', ->
+    expect(hello).to.eql 'world'
+
+  it 'should have correct value for lorem', ->
+    expect(lorem).to.eql 'ipsum'

examples/rspec.rb

@@ -0,0 +1,12 @@
+# RSpec
+describe 'Test' do
+  hello = 'world'
+  lorem = 'ipsum'
+
+  it 'should have correct value for hello' do
+    expect(hello).to eql 'world'
+  end
+  it 'should have correct value for lorem' do
+    expect(lorem).to eql 'ipsum'
+  end
+end