update PCA transformation to support performing a PCA on an already centered matrix
remove dependency on the mean centering for calculating input dimensions
flip the purpose of the boolean to match R prcomp functionality
add description of the mean-centered option in the readme under technical details
Some refactoring of the changes, update license file
add a unit test for performing a PCA on normalized data, adds to the iris unit test
add a unit test for normalized iris data
add unit test on normalized data to not re-normalize the input, forgot to add boolean
Merge branch 'develop' of https://github.com/mckennapsean/pca_transform into mckennapsean-develop
Compile erros fixed