* added bohr units and conversion to meters
    * added a free text label so users can label each element of a sequence.
    * added example using Ruby's Rappture bindings.

2008-06-11: fixed bug in Ruby putfile() method (bhaley)
2008-03-31: nanovis 20080331 released
2008-03-30: Rappture 20080330 released
2008-02-18: added initial bindings and build scripts for Ruby (bhaley)