style(index.html): remove *jumbotron* *container*; add  whitespace, reorder navbar classes
fix(off-canvas nav):  fix off-canvas navigation menu toggling

Add `app/less/offcanvas.less`, the css from the Bootstrap toggleable off-canvas example
Add `@import 'offcanvas.less' directive to `app/less/main.less`
Strip all css from *Typeography*, *Navigation*, and *Footer* sections in `app/less/main.less`
style(main.less): remove vestigal code, improve TODO comment
docs(CONVENTIONS): major revision, remove text-wrapping newlines

  - change `Author` to `Authors`, move author string to list, add /JR to authors list
  - update `Revision` tag
  - change some sectioning and section sizes
  - add *Goals*, *Body*, and *Footer* section, copy and revise text from *AngularJS* conventions text
  - add whitespace for readability
chore(release): v0.2.0
chore(CHANGELOG): add `CHANGELOG.md`
chore(Gruntfile): modify *bump* command to tag and commit
chore(build.conf): change *git commit* branch to `master`
chore(README): add *ngBoilerplate* to *Resources*