update install line
tweaks for compatibility with newer stuff
add some new s3-related context variables when publishing site
get creds for s3 bucket, closes #58
mark this version as current dev version in the readme
add new boto dependency to setup
go back to old preview server style
excise unused script
fix tarbell install command, install-template command
fix tarbell_update
refactor s3 setup to ask for and store s3 creds, allow for additional/arbitrary buckets w/ separate creds
making some changes to the cli to account for adjustments to s3 config data structure
update config template to work with changes to s3 config workflow
more adjustments to tarbell config template and publish workflow
update to new config file format and improve s3 bucket url parsing in the process
overhaul s3 prompt, sub command fixes
fix whitespace in s3 prompt
clean up some pathing regressions
clean up function signatures for main configure routine
fix use of configuration in publish command