Changes in version 0.0.6
o   Moved examples_chemo.zip within package
o   Changed function calls to nnls to nnls::nnls() 

Changes in version 0.0.5
 o  Better compression obtained by using R CMD build --resave-data
 o  Added dependence on R 2.10 

Changes in version 0.0.4

  o Thanks to Jan Gerretzen, a bug that appears when 
  (normS > 0 && normS != 1) is removed.