Merge pull request #90 from rodrigopinto/master

Fix #89: Update octokit version dependency.
Version bump and changelog
Correct typos
Merge pull request #91 from dockyard/doug-minor-readme-fixes

Correct typos
Find_first_issue uses v3 search_issues method now
Rewrote tests to use v3 search_issues method
Update CHANGELOG.md
Updated Changelog (w/ new version 1.5.3 heading)
Merge pull request #94 from ptrf/legacy_search_issues_fix

Use Github v3 API search_issues method
Version bump
Travis: Remove before_install
Use proper repo/state querying for Github v3 API
Fix test hang
Merge pull request #100 from dockyard/bc-fix-test-hang

Fix test hang
Update octokit
Merge pull request #101 from dockyard/bc-update-octokit

Update octokit
Merge pull request #96 from dockyard/doug-remove-before-script

Travis: Remove before_install
Merge pull request #98 from dmarkow/fix-repo-search

Use proper repo/state querying for Github v3 API
Updated CHANGELOG
Fix issue labels format

Now, [Get a single issue](https://developer.github.com/v3/issues/#get-a-single-issue)
API's response contains `labels` what format is Array of *object* (not an Array
of *string*)

Without this commit, the invalid request will be sent to
github API when the issue already has some labels.