Add node.js v10 support (#603)

Added node 10 to Travis and Appveyor

* conditional support for node v4 and v5 in travis.yml

* conditional support for node v4 and v5 appveyor.yml

.travis.yml

@@ -14,6 +14,7 @@ node_js:
   - "7"
   - "8"
   - "9"
+  - "10"
 
 addons:
   apt:
@@ -27,7 +28,7 @@ before_install:
   - echo Building for Node $TRAVIS_NODE_VERSION
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CXX=$LINUX_CXX; $CXX --version; fi;
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then c++ --version; fi;
-  - npm install -g npm@latest
+  - if [[ "$TRAVIS_NODE_VERSION" == "4" || "$TRAVIS_NODE_VERSION" == "5" ]]; then npm install -g npm@5; else npm install -g npm@latest; fi;
 
 install: true
 

appveyor.yml

@@ -24,18 +24,22 @@ environment:
     platform: x64
   - nodejs_version: "9"
     platform: x86
+  - nodejs_version: "10"
+    platform: x64
+  - nodejs_version: "10"
+    platform: x86
 
 install:
   - where npm
   - where node
   - ps: Install-Product node $env:nodejs_version $env:platform
-  - 'npm install -g npm@latest'
+  - 'if "%nodejs_version%" LEQ 5 (npm install -g npm@5) else (npm install -g npm@latest)'
   - 'if "%nodejs_version%_%platform%" == "4_x86" (npm config set -g cafile=package.json && npm config set -g strict-ssl=false)'
 
 build: off
 
 artifacts:
-  - path: 'build/stage/**/bcrypt*.tar.gz'  
+  - path: 'build/stage/**/bcrypt*.tar.gz'
 
 test_script:
   - node --version