add fields to issue's jql method to cut down the response
add fields to issue's jql method to cut down the response fixes issue #71
Merge branch 'adding-fields-to-the-jql-issue-method' of https://github.com/cbelsole/jira-ruby into adding-fields-to-the-jql-issue-method
Merge pull request #72 from cbelsole/adding-fields-to-the-jql-issue-method

Adding fields to the jql issue method fixes issue #71