Updated README
Updated README

Adding build status to README file

tfhartmann/puppet-splunk,huit/puppet-splunk,tfhartmann/puppet-splunk,excessivedemon/puppet-splunk,excessivedemon/puppet-splunk,tfhartmann/puppet-splunk,huit/puppet-splunk,excessivedemon/puppet-splunk,excessivedemon/puppet-splunk,huit/puppet-splunk,huit/puppet-splunk,tfhartmann/puppet-splunk,huit/puppet-splunk,excessivedemon/puppet-splunk,tfhartmann/puppet-splunk