Broken if not loaded using webpack due to `require.context`

[alexmingoia]

require.context is not available unless transpiled using webpack. This breaks any module that depends on ipfs-api and uses another loader such as browserify, such as webui.

[dignifiedquire]

If you don't want to transpile using webpack, why not just load the prebuilt files in dist?

[daviddias]

@dignifiedquire being browserify compatible, or in another words, maintaining that available for the developers that have been using js-ipfs-api with browserify from the beginning, it is kind of important and nice to have.

Seems like @alexmingoia already fixed it #160