Add south gravity, overlays & uppercasing to loltext

[Ruxton]

Allows us to get to some real nice looking configurations.

This idea and code is adapted from @levibuzolic's fork that contains hipstertext

The config for these image was this:

loltext:
  enabled: true
  :global:
    :overlay: true
    :overlay_colors:
  :message:
    :color:
    :font: "/Users/ruxton/Library/Fonts/Raleway-Light.ttf"
    :position: C
    :size: 30
    :stroke_color: none
    :uppercase: true
  :sha:
    :color:
    :font: "/Users/ruxton/Library/Fonts/Raleway-Light.ttf"
    :position: S
    :size: 20
    :stroke_color: none
    :uppercase: false

[matthutchinson]

This is awesome! nice work porting on those options. The new styling looks great and your PR looks all good to me too. Only thing is Travis CI seems to be failing on a couple of tests, i'll probably have some time tomorrow to help you out in getting this green before we can merge

Also, for disabling the ClassLength cop, for now just change the metric in our .rubocop_todo.yml config - we're going to revisit all the cops in a future refactor of the whole gem.

💡- @mroth this gives me an idea on 'themes' for lolcommits - applied specifically to the loltext.rb plugin ...

[Ruxton]

Yeah I'm not sure how to pass the feature on 1.8/1.9 that is matching the YAML dump.

On 1.8/1.9 the feature spec is adding /m to them and they're single quotes in 1.8/1.9 and always double quotes in 2.0+

[matthutchinson]

OK, I took a look and managed to get a green build on Travis (all rubies) with these 2 commits;

https://github.com/mroth/lolcommits/commits/south_gravity_and_overlays

The main problem is down to the differences in how YAML represents arrays between the various Rubies.

Can you port them to your changes and push here again, if all is green, then I'll merge your PR and get a gem release out soon.

[Ruxton]

👍 done

[matthutchinson]

Great, merging now 👍 - Thanks again for your PR!

[matthutchinson]

@Ruxton just a quick update to say that yesterday's gem release included this PR (v0.6.6) 👍
Also, before releasing I improved the configure options for loltext a little in this commit.