version .1.4 2016-1-20
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1. More unit tests
2. Support list_batches, list_batch_files, list_instance_sets, list_docs, list_jobs and user_profile
3. Better documentation for main functions

version .1.3 2015-12-14
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1. Uses environment to store token
2. Better auth function
3. Fixed error in vignette
4. Added basic tests
5. Check if file exists

version .1.2 2015-10-30
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1. Readme now in the CRAN package
2. Vignette build through knitr + better code
3. Changed license to MIT