Fix issue with install command

Changelog for 0.2.9:

• PR #3 Add use of template to Install command by @Waterdrips

Generated by Derek

Update for Remove service

Changelog for 0.2.8:

Generated by Derek

Extract PrepareImage function

Changelog for 0.2.7:

Generated by Derek

Extract Service deletion code

Changelog for 0.2.6:

Generated by Derek

Fix typo in faasd install

Changelog for 0.2.5:

Generated by Derek

Add error handling for when faasd cannot find unit files

Changelog for 0.2.4:

Generated by Derek

Install faasd to /usr/local/bin

Changelog for 0.2.3:

Generated by Derek

Add arm switch

Changelog for 0.2.2:

Generated by Derek

Fix vendoring for go-execute

Changelog for 0.2.1:

Generated by Derek

Clean-up on shutdown and run forever

Changelog for 0.2.0:

Generated by Derek