Compile errors when using from Docker. #246

When building browserify from docker, tsify will complain about "cannot find module abc". I noticed casing anomalies during output, and after some investigation/debugging determined it's related to normalizing filenames in host.js that is somehow not working as expected when executing from a docker environment.

repro: (on mac, simplified steps)

1. create a new project

2. Add a repro.d.ts file that imports a module
   a. npm i -S @types/events' b. in repro.d.ts file i. add imports {EventEmitter} from 'events'`
   ii. Export something
   bundle with browserify, and tsify plugin, default options (I used the CLI)
   expected: output.
   actual: output.

3. In a docker image, do the same process. Mount local file system into docker

expected: output.
Actual: TS Errors complaining about 'cannot find module'

Workaround: set "forceConsistentCasingInFileNames": true, in tsconfig. This is read by Host.js to normalize filenames which is related to this bug.