Merge pull request #2 from evildmp/develop-intro-docs

Rewords welcome page
Merge pull request #3 from evildmp/develop-intro-docs

Documentation work-in-progress
Merge pull request #4 from evildmp/develop-intro-docs

Fix glitch in 'improving' section
Merge pull request #5 from evildmp/develop-intro-docs

Improved ToC
Merge pull request #6 from evildmp/develop-intro-docs

Expands local development documentation
Merge remote-tracking branch 'upstream/master' into develop-intro-docs