managedmac::mounts documentation is incorrect

[dayglojesus]

The documentation suggests the class takes two params, but it only takes one... https://github.com/dayglojesus/managedmac/blob/master/manifests/mounts.pp#L7

Also, payload variables will not work in the profiles we create because the substitution when the profile is downloaded via Profile Manager. So the following doc needs to be updated.

http://dayglojesus.github.io/managedmac/classes/#managedmac::mounts

[dayglojesus]

partially addressed in 0.5.7