Merge pull request #25 from kissmetrics/learning_center

Learning Center
Additional suggestions for developing locally.
Update 2013-04-22-common-methods.md

Lean on using email address as your Customer ID.
adjusting media queries, misc css tweaks
indent all the things
Adding 2nd video to Learning Center
+MRR Report
Fixing formatting on 404 page
Indexing subsections of main JS Library documentation.
Add documentation for callback usage with record/set.
Merge branch 'jc/css-tweaks' into gh-pages

Conflicts:
	sitemap.xml
Merge branch 'gh-pages' of https://github.com/kissmetrics/km-support into gh-pages
Revert "Merge branch 'jc/css-tweaks' into gh-pages"

This reverts commit 5a11e091fe33254507c7439ece3220c893fb89fe, reversing
changes made to 069d361f3ee739139bff9f1c1cdb841c97cbabac.
Merge pull request #27 from kissmetrics/percy/revert_css_tweaks

Revert "Merge branch 'jc/css-tweaks' into gh-pages"
Fix issue that broke table formatting.
adjusting media queries, misc css tweaks
Merge branch 'gh-pages' of https://github.com/kissmetrics/km-support into gh-pages
Learning Center: +JS Library
Initial.
Combined tutorial for recording your first JS event.