add empty karma.conf.coffee
add karma-coffee-preprocessor to package.json
edit karma.conf.coffee: add target files, preprocessors, and plugins
replace single-quot to double-quot in webpack.conf.coffee
remove jasmine from package.json because using jasmine-core instead
add karma-phantomjs-launcher in package.json
add coffee-loader to package.json for using coffeescript in webpack
webpack: use coffee instead of js
improve karma.conf.coffee: succeed to run sample test
Merge pull request #25 from kenji0919/install_karma

#1 Install karma