Merge branch 'release/0.1.1'

* release/0.1.1: (63 commits)
  add note
  path fixes
  misc
  load all functions in repl
  show ruby version on test by default
  add some refcount desstructor tests
  little pmap performance test script
  RUBY_ENGINE is not defined on MRI 1.8.7
  fix future spec
  fix thread look in FixedPool after stop
  put cpu_count into Platform
  doc
  add a larger array to map over
  bump to jruby 1.7.2
  dynamically probe for FFI module
  spec_helper hack to run a test case :repeat times
  ignore .rbx dir
  documentation and tweaks of Platform
  allow test of thread_pool.stop again
  take out debug puts
  ...
Merge tag 'V0.1.1' into develop

0.1.1

* tag 'V0.1.1':