Add node 7 to build matrixes

.travis.yml

@@ -8,6 +8,7 @@ node_js:
   - '4'
   - '5'
   - '6'
+  - '7'
 os:
   - linux
   - osx

Dockerfile

@@ -6,5 +6,5 @@ WORKDIR /app
 RUN apt-get update && \
     apt-get install -y git curl build-essential vim
 RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.31.4/install.sh | bash
-RUN [ "/bin/bash", "-c", "source $HOME/.nvm/nvm.sh && nvm i 0.12 && nvm i 4 && nvm i 6 && nvm alias default 6" ]
+RUN [ "/bin/bash", "-c", "source $HOME/.nvm/nvm.sh && nvm i 0.12 && nvm i 4 && nvm i 6 && nvm i 7 && nvm alias default 7" ]
 RUN git clone https://github.com/giggio/node-chromedriver.git . && git remote add ssh git@github.com:giggio/node-chromedriver.git

appveyor.yml

@@ -9,6 +9,7 @@ environment:
   - nodejs_version: 4
   - nodejs_version: 5
   - nodejs_version: 6
+  - nodejs_version: 7
 install:
 - cmd: npm install
 build: off