updating and locking dependencies

making the README a bit more succinct

Merge pull request #2 from crcastle/patch-1

Update URL shown after deploying to Heroku

changing url links to refer to alexa-js/alexa-app-example

updated dependencies

Heroku button link fix

updated README + deps

added 'deploy to heroku' button

port => PORT

added minimum files for example to work

updated name to alexa-app-example

shortened name of app.json

added app.json

Initial commit