As described in the comments, inspect the installation to see if we
have been installed with "pip -e" and, if so, make sure we reference
the scripts from the source location rather than the
system-installations.
Update the documentation with a terse but helpful quick-start to show
an easy way to start developing a change using this.
Closes-Bug: #1491035
Change-Id: I0460061b834a2b854175f8c9be2be8d38c540c9d
ab5ed610e4