Merge pull request #7 from spikey360/master

well?
Merge pull request #8 from spikey360/develop

Fixed issue #11
minor changes

changelog:
1. Changed the params of the naive algorithm.
2. Introduced globals for weightage of correct/incorrect/passs.
3. Fixed(hopefully) decrease of b(theta) for failing question.

feedback+testing req
Incorporating arthasdk's minor changes on naive algo and globals into develop