BUG compression changedl try both (mamba-org#4)

* BUG compression changed

* ENH update and rebuild

* ENH maybe not

* REF try both compression settings just in case

* ENH clean up npm

* BUG errant line

ENH add dev docs, preserve bashrc, append to bash_profile, better tes…

…t setup (mamba-org#3)

Update README.md

BUG correct option for strict channels

add branding