Update Gemspec to include license and slightly change description.
add validation for vlan range inputs

Vlan range inputs should be in the format of begin:end
where begin and end are integers between 1 and 4024,
and end is greater than or equal to begin
Merge pull request #223 from sseago/vlan-range-validation

add validation for vlan range inputs
Merge pull request #229 from knowncitizen/gemspec_update

Update Gemspec to include license and slightly change description.
Version bump
Version bump
Remove RHEL6 from options for deployment.
Merge pull request #235 from knowncitizen/remove_rhel6

Remove RHEL6 from options for deployment.
Fix error messages for host assignment

This does 2 things for the host assignment error message reporting:
1) changes flash :warning to flash :error:
     This is a real error condition, so users should be properly
     alerted
2) Display the actual error messages to the user rather than burying
   them in logs:
     There are a variety of different conditions that can lead to
     host assignment failing, from UI-fixable stuff around setting
     operating system, etc. params in foreman to lower-level problems
     with DNS, DHCP, etc.

Updated commit resolves the formatting issues
Merge pull request #234 from sseago/unassigned-hosts-error-message

Fix error messages for host assignment
bump versin 0.1.20