Working guides at multiple zoom levels.
Axis working on ar downsample
Adding spread shader
Making unused serverdatasources non-fatal
Restoring accidentally removed plot
Ending merge
Only imports abstract_rendering if executed against.  Updated error message
Merging master...
Deferred load of abstract-rendering to use time on server.
Merging master
Formatting and spelling.
First working US Census AR example
need to add new package to setup.py.. not sure why travis did not catch this?
Fixed issues with negative start/end ranges
Merging master after bokeh.charts
Merging master after bokeh.charts...part 2
Merge pull request #769 from ContinuumIO/hotfix/crossfilter_install

need to add new package to setup.py.. not sure why travis did not catch ...
changing grunt and nodejs installs from wakari to bokeh channels
Merge pull request #771 from quasiben/fix/bokeh_grunt_build

Fixes to build and upload script
Merge pull request #755 from ContinuumIO/feature/abstract_rendering_guides

Feature/abstract rendering guides