address rspec deprecation warning

replace
{ ... }.should_not raise_error(ArgumentError)
with
{ ... }.should_not raise_error
lose jeweler, bundlerize
Merge branch 'specific-error' into bundlerize
rspec 2 style
rm ruby 1.8 support
use a different build number to differentiate
some more minor changes
Merge pull request #1 from dwo/build

0.1.0.1