Add ignore option for tracking bower components.

[jzaefferer]

For jQuery UI we need to install a specific jQuery version, while we want to defined the dependency itself as ">=1.6". Since bower install <endpoint> also installs all project dependencies, the simplest solution for us would be to tell this module which install command to run, to add jquery#<2.

See also jquery/jquery-ui#1271

[rxaviers]

For clarity... @jzaefferer, please correct me if I'm wrong. jQuery UI needs different jQuery versions for production vs. development. On production, it's >=1.6. But on development, it's <2. Currently, bower ignores different versions of the same package on dependencies vs. devDependencies. It simply uses dependencies (the production version), ignoring the devDependency different version.

I went ahead and opened issue bower/bower#1359 to see what bower people thinks about it. Then, we could decide how to proceed.

[jzaefferer]

So bower won't change, so this would still be useful.

[timmywil]

Sorry I was MIA yesterday, but I'm a little confused. This seems superfluous. How about giving the different endpoint a different name?

{
  "dependencies": {
    "jquery": ">=1.6"
  },
  "devDependencies": {
    "jquery-1.x": "jquery#<2"
  }
}

[jzaefferer]

That would work, but then it leaves me with an untouched endpoint:

>> Could not clean directory. Some bower components are not configured:  [ 'jquery' ]

Thanks to #18 I could work around that by specifying a noop copy:

"xxx": "jquery/whatever",

But that's hardly a proper solution. Is there any way to tell this plugin to ignore a component? The report does nothing for me in this case.

[jzaefferer]

Looks like the report option is ignored when clean: true is set, which we use.

[timmywil]

I like the ignore idea. I'll try to put something together tomorrow.

[timmywil]

FYI, the report option is like the little brother of clean. They report the same thing. If clean is true, report need not be set. If clean is false, one can choose to see the list of unused modules or not by setting report.