Add doc make target and dev for it.
Add docs Makefile command to fetch heka-docs, setup Sphinx, and build all the docs needed for packaging.
Add a travis.yml file.
Update gitignore.
Make sure to always do submodule checkouts.
Fix make so bin/activate isn't needed for basic make commands.
Use the latest Go tip.
Sed our sandbox file so that it compiles.
Don't rely on see working consistently.
Remove see usage, because its not portable.