Merge pull request #6 from mdboom/link-to-pip

Link to information about pip
Fix Google Analytics Tracking
Try using non-asynchronous analytics snippet
Update index.html

Add Ureka to list of installation methods for OSX & Linux.
Merge pull request #9 from jehturner/patch-1

Add Ureka to list of installation methods for OSX & Linux
Add missing commas
Merge pull request #7 from mdboom/fix-logo-link

Fix image link to logo.
Merge pull request #4 from mdboom/detect-os

Display install info based on the user's OS by default
adjusted doc dropdown per @mdboom's suggestion

closes #8
fix for google analytics
analytics to separate file
modified css to improve mobile compatibility and general styles consistency
Merge pull request #11 from kayleanelson/master

modified css to improve mobile compatibility and general styles consistency
Add fancy astronomy background -- because, hey, it's "Astro" py
Include background only on index page
Center and make image seamless
Add copyright for image