Merge pull request #38 from cassiel/master

-writeableDirPrefixes xxx:xxx:xxx.
Typo fix
Reworked README. Updated OSX steps, improved flow.
Merge pull request #40 from justinclift/typo_fix

Typo fix
Merge pull request #41 from justinclift/rework_readme

Reworked README. Updated OSX steps, improved flow.
Further refinement, mostly how to add plugins
Merge pull request #42 from justinclift/further_refinement

Further refinement, mostly how to add plugins
Merge branch 'master' of github.com:OpenEndedGroup/Field

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