Fixed invalid syntax in bower.json

Syntax seems to be wrong (again?)

Hope this fixes my problem regarding this output:
```
bower install Leaflet.StyleEditor
bower Leaflet.StyleEditor#* not-cached git://github.com/dwilhelm89/Leaflet.StyleEditor.git#*
bower Leaflet.StyleEditor#*    resolve git://github.com/dwilhelm89/Leaflet.StyleEditor.git#*
bower Leaflet.StyleEditor#*   download https://github.com/dwilhelm89/Leaflet.StyleEditor/archive/v0.1.1.tar.gz
bower Leaflet.StyleEditor#*    extract archive.tar.gz
bower Leaflet.StyleEditor#* EMALFORMED Failed to read /tmp/niko/bower/Leaflet.StyleEditor-16631-JPgnaQ/bower.json

Additional error details:
Unexpected token ]
```