Merge pull request #2 from propellerlabs/develop

Develop
Adjusted animations and styles for header.
Adjusted JS scroll offsets for header nav.
Updated social media links. Added .gitignore
Moved Google Analytics tracking tag to footer for page load optimization.

Conflicts:
	index.html
Updated verbiage in the Culture section. Need two more.

Conflicts:
	index.html
Added another item to culture section.
Temporarily hiding Insights section.
More tweaks to hiding Insights.
Remove .DS_Store and sass cache.
Add 4th rule: scale.
Fix bug in background image not showing up due to file extension mismatch.
Merge branch 'develop' of github.com:propellerlabs/website

Conflicts:
	index.html
Fix merge issues and horrendous tabbing.
Merge branch 'develop' of github.com:propellerlabs/website into develop
Merge branch 'develop' of github.com:propellerlabs/website into develop