Report output when 'npm install' fails to run

Issue #14
Mark release 0.2.0
Bump version number post-0.2.0
Feature-detect subprocess.check_output in installation interface

Issue #16
Depend on tern >=0.2
Disable HTTP proxy settings

Closes #24
Don't use re.escape for completion names

It messes up underscores in ST2

Closes #26
Add a .no-sublime-package file

To hopefully prevent package control from zipping this package.

Issue #22
Use stdin to terminate server, don't create port file
Mark release 0.3.0
Don't assume selection regions always have .a < .b

Issue #30
add a .gitignore ignoring node stuff