Added test option

[dsherret]

Regarding issue #149, I added a test property to the options. Set it to true to always show the banner on load (for testing purposes). I didn't update the documentation because that can easily be updated to the way you guys like it.

I followed how things are currently done in the code; however, there's some unnecessary assignment going on. You might as well assign the property in options straight to the variable in this code:

this.defaultOpts.bgColor = options.bgColor;
this.defaultOpts.color = options.color;
this.defaultOpts.lowerThan = options.lowerThan;
this.defaultOpts.languagePath = options.languagePath;
this.defaultOpts.test = options.test;

bkgColor = this.defaultOpts.bgColor;
txtColor = this.defaultOpts.color;
cssProp = this.defaultOpts.lowerThan;
languagePath = this.defaultOpts.languagePath;
test = this.defaultOpts.test;

I think the main intent was something like this though:

bkgColor = options.bgColor || this.defaultOpts.bgColor;
txtColor = options.color || this.defaultOpts.color;
cssProp = options.lowerThan || this.defaultOpts.lowerThan;
languagePath = options.languagePath != null ? options.languagePath : this.defaultOpts.languagePath;
test = options.test || this.defaultOpts.test;

Also, these variables are global. They're not private. I'm going to go through the code and clean it up.

Additionally, the code needs to be minified... I'm not sure what minifier you used so I didn't do it (it would be nice to have a build script)

[D1plo1d]

+1. I'd like to be able to control which browsers we support more finely.

[DawnPaladin]

+1. "Test" might not be the best name for this; it's useful to be able to activate the popup according to criteria of my choosing. Maybe name it "manualActivate" or "forceActivate" instead?