updates README.rb to include Jenkins URL advice 

A connection timeout occurs when responding to a POST /_builder if this isn't set. 
Janky goes to get the output from Jenkins but uses a URL sent from Jenkins instead of the config var.
Update job configs / exclude template from ID

If an existing job is found, it should be allowed to update.
Without this, the Jenkins job configuration dashboard grows out of
hand with new jobs any time job templates change.

As such, MD5 job id should not include the job file contents.

There is enough uniqueness in job name generation without resorting
to reading job file contents to affect the MD5 id.

This is pretty problematic if minor tweaks are made to the Jenkins
job.xml.erb templates.  Consider changes such as modifying email
notifications, or enabling Chuck Norris, etc.

We refresh jobs automatically as part of an automated deployment,
but this will result in new MD5 job ids created in Jenkins.  This
is bad news, especially when there are many jobs.  All jobs are
now effectively duplicated and the history is now no longer
correlated between the runs, etc.
Ignore the .ruby-version file created by boxen
Merge pull request #166 from github/ignore-ruby-version

Ignore the .ruby-version file
fix deprecation warnings about dynamic finders
fix deprecated scope warning
Refresh the build list every 5 seconds.
upgrade sinatra_auth_github to make it octokit2 compatabile
bump version up to 0.10
Merge pull request #172 from github/upgrade-octokit

Upgrade Octokit Deps
appease the gem errors
Merge pull request #169 from rafaelfranca/refresh

Refresh the build list every 5 seconds.
Merge pull request #125 from rileytg/patch-2

updates README.rb to include Jenkins URL advice
Merge pull request #165 from kassio/master

Add api to hubot get lasts builds
Merge pull request #129 from Iristyle/md5

Allow updating existing job configurations
Merge pull request #168 from akatz/fix-deprecation-warnings

fix deprecation warnings about dynamic finders
cut a 0.10.1 release
Revert "Merge pull request #168 from akatz/fix-deprecation-warnings"

This reverts commit ec5037d9564124260f1ae77ba2798332e0a10328, reversing
changes made to 9c051fe46560877bd16bac1cfcbde8822e681455.
Merge pull request #173 from github/revert-168

Revert "Merge pull request #168 from akatz/fix-deprecation-warnings"
Revert "Merge pull request #129 from Iristyle/md5"

This reverts commit 9c051fe46560877bd16bac1cfcbde8822e681455, reversing
changes made to 1523b420a9cf9a32cc258f3e5003fadbeb1edc28.