added a failOnError option

This gives the option to the user of the plugin to just have the
warnings output to the console, rather than break the build. Useful for
existing projects where making it breaking might be too painful at the
outset.
Send the correct type of value
Check it actually is a number and default to a string
formatting
Merge pull request #8 from danshearmur/jshint-options-types

Send the correct type of value
Merge pull request #6 from buggyvelarde/master

A failOnError option?
Updated the README.md such that it explains the downside of using the 'failOnError' option.
Tightened-up the test coverage around parameter parsing & handling
Fixed indentation
[maven-release-plugin] prepare release jshint-maven-plugin-0.0.8
[maven-release-plugin] prepare for next development iteration
Support for JSON config file for reading options and globals
Updated README file:

* formatted, listed options in a table
* included configFile option
Merge pull request #10 from kryger/master

Allow reading options/globals from external config file (JSON)
Update README.md
Report number of files with problems even if failOnError is false
Merge pull request #12 from kryger/master

Report number of files with problems even if failOnError is false (thanks kryger!)
[maven-release-plugin] prepare release jshint-maven-plugin-0.0.9
[maven-release-plugin] prepare for next development iteration
Show recap of failures when reporting build failure.