Renamed filenames for all error-rate estimators to a common format.
Merge branch 'master' into refactor-errorest
The naming convention for error-rate estimators is 'errorest_'. Cleaned up some code and documentation as well.
Updated documentation and interfaces for each individual error-rate estimator.
Revamped unit tests for error-rate estimation.
Revamped wrapper for error-rate estimation. Cleaner and documentation much improved. Closes #10
Revamped README.