Import leftover features from wigglemaps into GeoJS

[aashish24]

• Import brushing functionality (specifically over point datasets)
• Import polygon highlight feature
• Import ascii grid reader feature

Ref: #10

[jbeezley]

Brushing was added in #213. Currently, it is handled for both points and lines. Other features just need to implement the boxSearch method to enable it.

[aashish24]

Brushing was added in #213. Currently, it is handled for both points and lines. Other features just need to implement the boxSearch method to enable it.

@jbeezley thanks for bringing this up. You are right we do have this feature but what I would like is to provide a default handler that will highlight the points and lines that are brushed. So my updated wish list would be

• Provide default handlers for brushing and selection
• Implement box search for geometry feature
• Import readers (yet to be determined)