Cleanup
Made Media type detection of instagram more accurate. Added new media type to handle instagram profile pics, for snapmap
Images can now be used in place of map pins. closes #77

use `image` inside the location object and include a url to use. `use_custom_markers` also has to be set to `true` in the story map options. Same goes for custom icons except you need `icon` inside the location object and include a url to use.
Changed how zoom calculations are done. Should be MUCH better now, especially with tight clusters. Also added Instagram snapmap examples.
Created an easy way to access the leaflet map object. `yourstorymapobject.map` will give you access to the leaflet map. Closes #124 Closes #132

Regarding issue #132, we are not considering creating another build without Leaflet at this time. One of our main goals of the project is to make StoryMap as easy to use as possible, and having many js files with complicated use cases does not fit within that goal. We will be looking at documenting the build process as well as simplifying it in order to serve needs like this one though.
Cleanup new getZoomBounds function
Nice looking links and instagram example uses custom pin images.
Updated attribution line to reflect knight lab style. Also moved it before Leaflet attribution.
Tweaks to attribution style
Cleanup and styling likes for snapmap
Remove border from embed page for now.
Flickr snapmap mods
Release 0.2.8
Added embed parameter for custom image markers
Merge branch 'master' of https://github.com/NUKnightLab/StoryMapJS

Conflicts:
	build/embed/index.html
Release 0.2.9
Release 0.2.9
restore use custom markers
Release 0.2.9
simplify repetitive code