added support for resolutions

[jasonayre]

Alphabetized method names and added support for resolutions to ensure dependencies are resolved using specific version, i.e.

resolution "angular", "1.2.22"

bx rake bower:install

Will output into bower.json

{
  "name" : "dsl-generated dependencies",
  "dependencies" : {
    "angular" : "1.2.22"
  },
  "resolutions": {
    "angular": "1.2.22"
  }
}

[coveralls]

Coverage decreased (-0.73%) when pulling 8a6ea28 on jasonayre:master into c8b598d on 42dev:master.

[SergeyKishenin]

Thanks for the PR. Could you please update Readme and Changelog!

[anutron]

Any update here?

• Just a user who needs it...

[SergeyKishenin]

@anutron, just released v0.9.0. Check it out!

[anutron]

Sweet. Thanks!