support region 'eu-central-1'
add values for cost calculation of region 'eu-central-1'
refactored HOURLY_PRICING to a Hash containing Arrays
simplified read_units(), write_units()
added exception handling
be styleguidish
fix building rbtree on ruby2 by requiring'>= 0.4.1'
require aws-sdk-1 to prevent future breakage on release of v2
prefer add_runtime_dependency
add me as an author
fix logging in signal contexts on ruby 2
use Logger on ruby 1
use MonoLogger on ruby 2
refactored methods related to graphing
simplified logic
use system() to call R
tweaked R scripts bit
tweaked signal hanlder
log on EXIT
cleanup
do not load services twice
load services when configuration is set
removed superflous load_services()
do not rely on custom exception so early and just raise
Merge branch 'eu_central_1'
Merge branch 'ruby2_gemspec'
Merge branch 'mono_logger'

Conflicts:
	dynamo-autoscale.gemspec
Merge branch 'graphing'
fixed service