Set flag to create folder /vagrant/code if it doesn't exist

On first run of vagrant up the following error was occurring
* Shared folder host path for 'code' doesn't exist: code
Update instructions for building and installing module

Use 'build' as parameter for ./go instead of 'package'
Changed directory in which *.omod file is found
Merge pull request #8 from cathy-mcdonald/master

Fixes to minor issues
Daniel - Adding xvfb and firefox to the puppet configuration for the vagrant, so that the cucumber webdriver functional tests can run inside a ssh session.
Merge pull request #9 from dtong2/firefox-xvfb

Daniel - Adding xvfb and firefox to the puppet configuration
Updated instructions

Location of omod files. Instructions to resolve some issues involved
(mostly in Windows)
Merge pull request #10 from thewheat/master

Updated instructions based on some issues from newbie night
Daniel - Configured vagrant to start on vagrant up

Added 'export DISPLAY=:1 to bashrc'
Configured vagrant to startup on display :1
Merge remote-tracking branch 'upstream/master' into firefox-xvfb
Merge pull request #1 from dtong2/firefox-xvfb

Adding firefox & xvfb