Fix invalid function name
Add test for helm-gtags--check-browser-installed
Remove helm-gtags--remote-p global variable

We no longer use it.
add Makefile for unit test
Use remhash instead of setting nil
Use otherwise instead of 't'
Add file description
Add test for 'helm-gtags--how-to-update-tags'
Use defconstant for internal buffer name variable
DRY
Don't read input before helm init attribute
add command test
Merge pull request #61 from syohex/refactoring

[WIP] Refactoring again