following changes have been put up in these commits

[souparno]

1. module.export syntax to let the package get used from npm require
2. setting the codemirror size to take up 100% of the available area
3. codemirrorOptions.onLoad should be checked and called inside the watc…
4. function created to autoformat code
5. autoformatRange and autoIndent function removed
6. call the onLoad function only once