New Streaming and Buffered Interfaces (#162)

* add function signatures

* fix typo

* complete update the spec

* chore: update deps

* structure tests, add placeholders

* apply cr

* update .add tests

* files.add done

* .addReadableStream

* .addPullStream

* files.cat

* .catReadableStream

* catPulLStream

* .get

* getReadableStream

* chore: fix travis

* chore: add ipfs.ls spec

* chore: update CI

* chore: fix CI and linting

* fix directory test

* add remaining tests for .ls .lsReadableStream and .lsPullStream

* apply spec CR

* enable all tests to fix ipfs-inactive/js-ipfs-http-client#339

* remove dup ls test

* .add tested in js-ipfs

* get tests also passing on js-ipfs

* ls is implemented in js-ipfs too

.travis.yml

@@ -9,12 +9,7 @@ matrix:
 script:
   - npm run lint
 
-before_script:
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
-
 addons:
-  firefox: 'latest'
   apt:
     sources:
       - ubuntu-toolchain-r-test