Add implementation of RANSAC algorithm
Add ransac function to __init__.py of utils package
Fix bug in residual determination
Add step-by-step description of RANSAC algorithm
Add parameter description to RANSAC and modify API
Add example plot script for RANSAC
Add simple RANSAC unit test
Add unit tests for RANSAC is_model_valid and is_data_valid
Add unit tests for RANSAC max_trials option
Return number of trials in RANSAC
Fix n_trials return value and add additional test
Add n_trials return value to doc string
Add test for stop_n_inliers parameter
Add test for stop_score parameter
Move ransac.py to _ransac.py to avoid nosetest namespace conflict
Set numpy random seed for all test functions
Remove unused variable
Add missing information predict method of estimator
Skip iteration for empty inlier sample set
Move algorithm description to notes section