Better autocomplete

[krampstudio]

• reconfigure YoucCompleteMe
• generate .ternproject on the fly
• select useful tern plugins

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

[krampstudio]

Partially addressed by #38

[krampstudio]

May be for 1.3 I'll just generate a basic .tern-project to prevent issues like #41