create module to check argument on config map
create configuration class
create file line reader (get first line on file and can delete them after tweeted it)
add simple dummy console writer, and a twitter writer: for tweet content from file
add bundler dependency management
add Job, a class that use undefined reader to read content and undefined writer to send data, and delete them from input list (generic algo): can be used for some input/output implementations
main class, that choose reader and writer implementations and run job
script to move files into heroku directory (that contains real configuration)
add gitignore
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