Updated Demo URL

Updated Demo URL in README
Removed Leaflet Package

Removed Leaflet Package
Organizing and Optimizing

- Moved Esri Enums to their own JSON file.
- Moved sample servers to their own JSON. Switching loading the list
from HTML to the JSON file.
Icons

- Changed icons.
- Added larger icons.
- Added missing service icons.
- Added template for Geometry Server, Geocode Server, and NAServer.
- Added new partial for Service Header with no map.
Fixed mapExtent

- Fixed display of extents on a map in the mapExtent page.
- This works for most, but not all, extents. Some extents fail because
of failure to project basemap.
- Switched generateTable to simpler multiple inputs.
- Added esriUnits to enums.
- Added Shepherd.css
- Removed table partial.
- Switched to using Bootstrap modal for About dialog.
- Added light gray strip around service info navigation bar.
Added description for Spatial References

- Closed #13 Add Details to Spatial References
Added layers to tree

- Added layers of MapServer and FeatureServer to the tree.
- Fixed details of spatial reference info.
- Added WKT info.
- Added icons for layers.
Added info panel for Layer

- Added unique value renderer (simple and class breaks are still to be
added).
- Added Symbol partial.
- Added helper for color details.
- Improved display of Extent section.
- Switched serviceInfoHeader partial to use parent object rather than
just itemUrl (improves performance).
- Added more enums.
- Added ifequal helper.