Create the algorithm

[torisimon2]

references #23

Develop a refined version of the algorithm that more accurately calculates a confidence score representative of spear phishing likelihood.

Definition of Done:

• [x] A new method of determining the spelling score is implemented
• [x] A new method of determining the grammar score is implemented
• [x] A new method of determining the keyword score is implemented

[SorrenMosher]

Did some basic research for formulating each algorithm. Implemented changes for spelling, grammar, and keyword scores. Submitted pull request. [t:45]