syntax fix
add _englishNumber method  and englishNumber to porototype
add test.english.js unit test
update README
add _switchKey method  and switchKey to prototype
add ? to array
add test.switch.js unit test for key switching
update readme add breakline after Fix Persian Characters in URLs (###4)
Merge pull request #15 from itmard/master

Convert English numbers to Persian and change keyboard layout persian to english
Update README.md
Merge remote-tracking branch 'upstream/master'

Conflicts:
	README.md
	persian.js
	test/test.english.js
Applying DRY,fix travis,improve number converter