* feat(git): add node_modules to gitignore
* feat(GlpiRestClient): compile the code with babel and webpack
* feat(GlpiRestClient): minify compiled code
* ci(GlpiRestClient): change circleci to travis
* refactor(GlpiRestClient): move code
* build: move source code to 'src' and the compiled library to 'lib'
* refactor(GlpiRestClient): update sample codes and unit tests
* build(package): update repository url
* build(package): update main
* build(package): update contributors