Updated instructions

Change-Id: Ic05fda76dfacbc0bb20d2bbfe02614e00861b38f
Update CHANGELOG.md
0.5.0

Change-Id: I2a9d0c91f97047c4ef9f82aea7194ef0b9a0f841
Update README.md
Update README.md
'lingon version' or 'lingon -v' displays local & cli versions. Also added 'lingon help' to display help (previously only -h worked)

Change-Id: I7638ce3b48a5944381cc262005576560cef6df92
Updated changelog
0.5.1
Reverted to old instructions until CLI works
Update README.md
Moving lingon cli to its own project
0.5.2