Improved install.md document
Merge branch 'master' of github.com:kinkome/pipe2me
Fixes an issue with the issue script.

issue didn't properly handle issues that started with the '@user' tag.
Updated installation description
Updated requested pipe2me-client version.
Simplify installation by also looking into /usr/sbin

..or whenever /usr/sbin is not in the path.
Merge branch 'master' of github.com:kinkome/pipe2me

Conflicts:
	doc/install.md