Fixes #10 - Smooth out the lines

[andrewheins]

I've created a basic implementation of line smoothing. Hopefully this helps.

[aullman]

Thanks for this @andrewheins. I would love to merge it but it seems that there are some bugs with collaborative drawing.

[bostondv]

@aullman Andrew and I worked on this together. After submitting this PR we realized there were some major problems with the collaborative drawing. It worked great just drawing by yourself :(

We're kind of stuck and not sure how to fix the problems. Any chance you'd have some time to help us out with making it work collaboratively?

[bostondv]

Hey @sumansaurabh, that would be awesome!

It works fine mostly with only one person in the meeting but as soon as another starts using the whiteboard thats where the problems come in.

The various problems in @andrewheins master branch that I know about are:

• Not all lines get synced between users (or are slow to appear)
• Lines drawn from other users appear connected to each other and your lines when synced
• Color is not properly transmitted between lines
• Erasing between users doesn't work (sometimes actually appears as lines to other user instead of erasing)
• Undo/redo doesn't sync between users

Those are some I know about, though there might be other problems we haven't realized. We also have a "fullDraw" branch that we experimented with trying to fix colors/undo/redo but it's currently not working either.