Resetting map center on zoom
Add delta property to zoom event

A zoom operation can cause a pan, so include the delta information.
Rename delta => gcsDelta
Merge pull request #237 from OpenGeoscience/zoom-delta

Zoom delta
Merge pull request #236 from OpenGeoscience/custom-tile-urls

Make tile urls customizeable with a formatting function
Merge pull request #233 from OpenGeoscience/zoom-interpolation

Enable custom interpolation for animated zoom/pan
Merge remote-tracking branch 'origin/ui-controls'

Conflicts:
	src/core/map.js
Merge pull request #238 from OpenGeoscience/resolved-merge-ui

Resolved merge ui
Removed unnecessary common libraries
Created jade framework for examples/updated osm example
Added example source code and icons
Added a basic landing page
Removing included dependencies in favor of bower versions
Starting more examples
checkpoint
Updated layer example
Added thumbnail for layer example.
Changed the style of the landing page a bit.
Made links relative to support github.io
Reorganized examples and finished the main page