Fix readdir for root path (#35)

* Fix readdir for root path

* Fix merge of webpack conf

* Fix travis.yml to deploy on master

* Remove windows platform from travis.yml

* Enable caching

* mkdirpSync

* Fix build script

.travis.yml

@@ -1,4 +1,8 @@
 language: node_js
+cache:
+  yarn: true
+  directories:
+    - lib
 node_js:
 - 8.9.3
 matrix:
@@ -6,7 +10,6 @@ matrix:
   - os: linux
     dist: ubuntu
   - os: osx
-  - os: windows
 before_install:
 - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install libxkbfile-dev libsecret-1-dev;
   fi
@@ -20,4 +23,4 @@ deploy:
   file: packages/server/cli-$TRAVIS_OS_NAME
   on:
     repo: codercom/vscode-online
-    all_branches: true
+    branch: master