Merge pull request #6 from mindscratch/master

fixed gobrew list command to list all available versions
check if osx darwin for correct go 1.2 install
Added install script
Added upgrade script
Added uninstall script
Updated readme for utility scripts usage
Merge pull request #8 from rastasheep/install-script

Install script
fix install.sh

usage of "~" doesn't get expanded, change to use $HOME
update install.sh so colors work

need to use "-e" to get the actuals color to output instead of just the text.
update install.sh to source profile after install

sourcing the profile causes the gobrew-init script to run which sets up directories and other stuff which is required to install go. (ex: $HOME/.gobrew/cache gets created)
Merge pull request #9 from mindscratch/patch-1

fix install.sh
Merge pull request #10 from mindscratch/patch-2

update install.sh so colors work
Merge branch 'patch-3' of https://github.com/mindscratch/gobrew into mindscratch-patch-3

Conflicts:
	tools/install.sh
Fix exit codes in gobrew-use

At the moment when its successful in setting the version it exists with exit code '1'
while that should be exit code '0'
This PR fixes that.
Merge pull request #12 from electrical/fix_gobrew_use

Fix exit codes in gobrew-use
update list command to be less restrictive when greping for files