Update bundle

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Fix Util.processor_count method on some platforms

RbConfig was not imported in util.rb. As a result processor_count always
returned 1 from its rescue-branch on some platforms:

    $ ruby --version
    ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
    $ ruby -e "p RbConfig"
    -e:1: uninitialized constant RbConfig (NameError)

Compare with:

    $ ruby --version
    ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]
    $ ruby -e "p RbConfig"
    RbConfig

Originally submitted as:

    https://github.com/wincent/Command-T/pull/64

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Add Pavel Sergeev to the credits

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Merge branch 'dzhioev/threads_count_fix' into master

* commit 'dzhioev/threads_count_fix':
  Add Pavel Sergeev to the credits
  Fix Util.processor_count method on some platforms