Add staticDist option for copying static files from a template

[imaustink]

Justin has provided this step-by-step guide:

1. https://github.com/bit-docs/bit-docs-generate-html/blob/master/bit-docs.js

siteConfig.html = {
               dependencies: {},
               static: [],
               templates: [],
               staticDist: []
           };
if htmlConfig has `staticDist` -> merge into `siteConfig.html.staticDist`

2. https://github.com/bit-docs/bit-docs-generate-html/blob/master/site/default/static/build.js


// BOTH IN devBuild and NOT
siteConfig.html.staticDist.forEach(function(path){
    fsx.copy(path, path.join(folders.dist) )
})

COPY THIS TEST: https://github.com/bit-docs/bit-docs-generate-html/blob/master/build/build_test.js#L108

3. https://github.com/canjs/bit-docs-html-canjs/blob/master/bit-docs.js


bitDocs.register("html", {
    templates: path.join(__dirname, "templates"),
    dependencies: dependencies,
    staticDist:  path.join(__dirname, "search-dest"),
});

[chasenlehara]

#41