chore(package): update webpack-defaults && devDependencies (#7)

Author: michael-ciniawsky

.babelrc

@@ -32,4 +32,4 @@
       ]
     }
   }
-}
+}

.gitattributes

@@ -1,3 +1,4 @@
 yarn.lock -diff
 * text=auto
-bin/* eol=lf
+bin/* eol=lf
+package-lock.json -diff

.github/ISSUE_TEMPLATE.md

@@ -1,5 +1,7 @@
+<!--
 1. Check the version of package you are using. If it's not the newest version, update and try again (see changelog while updating!).
 2. If the issue is still there, write a minimal project showing the problem and expected output.
 3. Link to the project and mention Node version and OS in your report.
 
 **IMPORTANT! You should use [Stack Overflow](https://stackoverflow.com/) for support related questions.**
+-->

.travis.yml

@@ -7,26 +7,28 @@ matrix:
   fast_finish: true
   include:
     - os: linux
-      node_js: '7'
-      env: WEBPACK_VERSION="2.2.0" JOB_PART=lint
+      node_js: '8'
+      env: WEBPACK_VERSION="2.6.0" JOB_PART=lint
     - os: linux
       node_js: '4.3'
-      env: WEBPACK_VERSION="2.2.0" JOB_PART=test
+      env: WEBPACK_VERSION="2.6.0" JOB_PART=test
     - os: linux
       node_js: '6'
-      env: WEBPACK_VERSION="2.2.0" JOB_PART=test
+      env: WEBPACK_VERSION="2.6.0" JOB_PART=test
     - os: linux
-      node_js: '7'
-      env: WEBPACK_VERSION="2.2.0" JOB_PART=coverage
+      node_js: '8'
+      env: WEBPACK_VERSION="2.6.0" JOB_PART=coverage
 before_install:
+  - 'if [[ `npm -v` != 5* ]]; then npm i -g npm@^5.0.0; fi'
   - nvm --version
   - node --version
+  - npm --version
 before_script:
   - |-
     if [ "$WEBPACK_VERSION" ]; then
-      yarn add webpack@^$WEBPACK_VERSION
+      npm i --no-save webpack@^$WEBPACK_VERSION
     fi
 script:
-  - 'yarn run travis:$JOB_PART'
+  - 'npm run travis:$JOB_PART'
 after_success:
   - 'bash <(curl -s https://codecov.io/bash)'