ttscoff/Slogger — pull request #200 by BrettBukowski (2013-08-27 04:14:14+00:00)
Title: Require json so that Github plugin can be run via the --onlyrun flag

Error triggers when Github plugin is run via the --o / --onlyrun flag due to json not being required.

```bash
➜ Slogger git:(master) ✗ ./slogger -o github
Initializing Slogger v2.1 (2.1.0.5)...
22:03:37 GithubLogger: Logging Github activity for BrettBukowski
/Users/brettbukowski/src/Slogger/plugins/githublogger.rb:52:in `do_log': uninitialized constant GithubLogger::JSON (NameError)
from /Users/brettbukowski/src/Slogger/slogger.rb:256:in `block in run_plugins'
from /Users/brettbukowski/src/Slogger/slogger.rb:243:in `each'
from /Users/brettbukowski/src/Slogger/slogger.rb:243:in `run_plugins'
from /Users/brettbukowski/src/Slogger/slogger.rb:387:in `'
from /Users/brettbukowski/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /Users/brettbukowski/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from ./slogger:18:in `

'
```