Add ipywidgets
Add dftatom
dftatom: Fix the rpath issue
update ruby to 2.1.0
Merge pull request #98 from jcftang/ruby-2.1.0

update ruby to 2.1.0
Merge pull request #80 from certik/ipywidgets

Add Ipywidgets and dftatom
Put Python into PATH during build
Add Cython into PATH during builds
dftatom: no need to setup Python/Cython paths
Merge pull request #100 from hashdist/python_fix

Add Python/Cython into PATH
Add sqlite to Python deps again

Fixes #99
Merge pull request #101 from hashdist/sqlite

Add sqlite to Python deps again
Add Berkeley DB 4.8
Add the bitcoin package
Use berkeleydb in bitcoin
bitcoin: disable UPnP
Bitcoin use boost
Use multiple cores
Install bitcoin
Add rpath for boost