Added yarn, travis support, removed node_modules from git

.gitignore

@@ -1,8 +1,59 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# nyc test coverage
+.nyc_output
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directory
+# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
+node_modules
+app/node_modules
+
+# OSX
+.DS_Store
+
+# Packaged and compiled files
+lib
+.eslintcache
+
+# Env configuration
+.env
+
+# Editor
+.idea
+
 [._]*.s[a-w][a-z]
 [._]s[a-w][a-z]
 *.un~
 Session.vim
 .netrwhist
 *~
-.DS_Store
-node_modules

.travis.yml

@@ -0,0 +1,16 @@
+sudo: false
+
+language: node_js
+
+node_js:
+  - 7
+  - 6
+  - 4
+
+cache: yarn
+
+script:
+  - yarn run build
+  - yarn run copy-polyfill
+  - yarn run copy-three
+  - yarn run test