Merge tag 'release/v1.2.0' into development

Release v1.2.0

* tag 'release/v1.2.0':
  Version Bump to 1.2.0
Switch from using 'git ls-files' to Ruby Dir globbing - Closes #54
allows to inclue ANSI SGR codes into molecules, preserving the printable length
Remove comment
Whitespace
Name the regex for the ANSI SGR codes so that it's more clear what we're doing
Add specs for the ANSI color code length calculation
Merge branch 'ddnexus-master' into development - Closes #50

* ddnexus-master:
  Add specs for the ANSI color code length calculation
  Name the regex for the ANSI SGR codes so that it's more clear what we're doing
  Whitespace
  Remove comment
  allows to inclue ANSI SGR codes into molecules, preserving the printable length
Added an option to set the :remainder_mark (along the lines of :progress_mark) that allows the user to set the character used to represent the remaining progress to be made along the bar.
Merge branch 'zormandi-master' into development - Closes #52

* zormandi-master:
  Added an option to set the :remainder_mark (along the lines of :progress_mark) that allows the user to set the character used to represent the remaining progress to be made along the bar.
Use HTTPS RubyGems source

The HTTP source is insecure and deprecated.
Merge branch 'amarshall-patch-1' into development - Closes #60

* amarshall-patch-1:
  Use HTTPS RubyGems source
Test with Ruby 2.0.0 on Travis CI
Add Ruby 2.0.0 to the README as a supported Ruby version
Merge branch 'amarshall-patch-2' into development - Closes #61

* amarshall-patch-2:
  Add Ruby 2.0.0 to the README as a supported Ruby version
  Test with Ruby 2.0.0 on Travis CI
Update Gemfile.lock to use HTTPS for Rubygems
Change output variables in specs to be `let`'s instead
Change progressbar variables in specs to be `let`'s instead
Do not output multiple bars if `#finish` is called multiple times
Do not output the bar multiple times if `#stop` is called when the bar is already stopped