Remove github.com/Unknown/cae/zip dependency

This package seems to be useless (and implementation broken).

$ go build -o tutorial/bin/basic_window tutorial/basic_window.go
# github.com/miketheprogrammer/go-thrust/spawn
spawn/helper_darwin.go:67: undefined: "github.com/Unknwon/cae/zip".ExtractTo

Signed-off-by: Stéphane Depierrepont <toorop@toorop.fr>
Merge pull request #5 from Toorop/master

Remove github.com/Unknown/cae/zip dependency
Added Gitter badge
Added Chat With Us to README
Added example for chat client/server
Update client/server remove maximize call
Update Readme with some notes about the Examples
Merge pull request #10 from miketheprogrammer/example_chat_client_server

Example chat client server
Merge pull request #8 from gitter-badger/gitter-badge

Add a Gitter chat badge to README.md
Some basic improvements to looping structures
Update versions/readme/changelog
Merge branch 'fix_idle_times'

Conflicts:
	README.md
Added jankybrowser as an example
Merge pull request #14 from miketheprogrammer/example/jankybrowser

Added jankybrowser as an example
Dont use submodules
Merge branch 'example/jankybrowser'
Update examples/jankybrowser with thrust logo
Spawn revisions. General enhancements. Error bubbleing enhancements, interface enhancements
Fix helper_windows, modify tutorials and examples to work with new api
commenting on exit codes