Merge pull request #518 from jeff1evesque/doc_scikit_learn

#512: README.md, update 'scikit-learn' submodule
#490: README.md, Merge 'GIT', 'File Permission' Subsections
#490: README.md, minor language changes
Merge pull request #519 from jeff1evesque/doc_git

#490: Merge 'GIT', 'File Permission' Subsection
#484: README.md, update 'GIT' subsection
Merge pull request #520 from jeff1evesque/doc_git

#484: README.md, update 'GIT' subsection
#485: README.md, Update 'GIT Submodule' Subsecton
Merge pull request #521 from jeff1evesque/doc_git_submodule

#485: README.md, Update 'GIT Submodule' Subsecton
#480: README.md, add 'Bash Script' Subsection
#480: README.md, fix incorrect repository reference typos
#480: README.md, add reason for bash over python
#480: README.md, restructure 'Bash Script' subsection
#480: README.md, minor language changes to 'Bash Script' subsection
#480: README.md, minor language changes to 'Bash Script' subsection
#480: README.md, minor language changes to 'Bash Script' subsection
#480: README.md, manual execution of 'bash_loader'
#480: README.md, restructure 'Bash Script' subsection
#480: README.md, redefine 'Bash Script' subsection
#480: README.md, minor language changes to 'Bash Script' subsection
#480: README.md, minor language changes to 'Bash Script' subsection