add link to documentation
define PHEDEX_SCRIPTS correctly
test for environment file before sourcing it in your ~/.bashrc. This prevents errors if your home directory is a shared network location, such as AFS
define PHEDEX_ANSE relative to $TESTBED_ROOT, not hardwired path
Merge pull request #3 from TonyWildish/master

updates to work on pre-existing SLC5 images without vagrant