* moved contracts from gitlab to main codebase
* added missing event param
* removed erroneous from description
* updates:
* changed maths of token -> MB conversion
* new tests for changed maths
* length check on cosmos address
* begun code doc
* code documentation
* small comment cleanup
* cont. w tests, may have found bug in maths re: using not whole tokens: investigating
* finished code doc
* included requested changes to contract
* change to maths operations, shrunk test error to < .9
* updates:
* updated tests
* updated readme
* removed commented out code, changed variable name to be more informative
* removed unnecessary byte32 length check