fix #13

Regex now matches strings like `pylint 1.2.3` or `pylint-script.py 1.2.3`

Test it here:
http://coffeescript.org/#try:input1%20%3D%20'pylint%201.3.0%2C'%0Ainput2%20%3D%20'pylint-script.py%201.3.0%2C'%0A%0AversionRegEx%20%3D%20%2Fpylint(-script.py)%3F%20(%5B%5Cd%5C.%5D%2B)%5C%2C%2F%0A%0Aresult1%20%3D%20versionRegEx.exec(input1).slice(-1)%5B0%5D%0Aresult2%20%3D%20versionRegEx.exec(input2).slice(-1)%5B0%5D%0A%0Aalert%20result1%20%2B%20'%20%7C%20'%20%2B%20result2