on execution enum, make sender arg before response arg

this is just to make it consistent so that the sender is always first in all blocks. previously it differed from #register which takes sender first
add some documentation
move ccsh into 'examples' dir
Version: 0.1.0.0

* move ccsh into 'examples' dir
  Patrick Hemmer (2014-03-10 00:53:04 -0400) - @d1976f1

* add some documentation
  Patrick Hemmer (2014-03-10 00:46:21 -0400) - @89233b7

* on execution enum, make sender arg before response arg
  Patrick Hemmer (2014-03-10 00:44:08 -0400) - @09dd652

* update for corosync gem 0.1.0.0
  Patrick Hemmer (2014-03-10 00:09:45 -0400) - @b11b293

* add quorate? method
  Patrick Hemmer (2014-02-01 00:29:42 -0500) - @1b9b2ae

* Add start method to provide initial quorum callback
  Patrick Hemmer (2014-01-31 22:28:10 -0500) - @f1f7ea8

* process quorum notifications before cpg
  Patrick Hemmer (2014-01-31 22:24:17 -0500) - @8069580

* fix description of on_confchg callback parameters
  Patrick Hemmer (2014-01-31 22:05:03 -0500) - @44bc53e

* simplify version management
  Patrick Hemmer (2014-03-10 00:12:52 -0400) - @9d10e7c

* handle leadership when quorum is lost
  Patrick Hemmer (2014-01-31 18:42:53 -0500) - @1e672d1

* add sample program
  Patrick Hemmer (2014-01-31 15:06:52 -0500) - @90118a4

* fix handling nodes leaving while waiting for response
  Patrick Hemmer (2014-01-31 15:06:21 -0500) - @587087f

* dump exceptions to stderr on the local host
  Patrick Hemmer (2014-01-18 03:42:53 -0500) - @d653eb0

* allow more flexible exception ignoring
  Patrick Hemmer (2014-01-15 23:49:48 -0500) - @98e5e9a

* documentation fixes
  Patrick Hemmer (2014-01-15 21:12:09 -0500) - @9ffd31f

* add #leave method to leave the CPG group
  Patrick Hemmer (2014-01-13 08:42:36 -0500) - @3cd55e4

* add a check for MRI Ruby thread stack size
  Patrick Hemmer (2014-01-12 04:47:25 -0500) - @e10e6b3

* add quorum callbacks
  Patrick Hemmer (2014-01-10 08:36:47 -0500) - @d60640c

* fix #stop and allow it to be called if already stopped
  Patrick Hemmer (2013-12-01 23:02:01 -0500) - @9026e19