Merge pull request #1 from sneumann/master

Polish description, platform independent loading of default parameters
enable reloading of saved parameter sets

If paramsets.Rdata file exists, load it in preference to the
defparamsets.Rdata file.  paramsets.Rdata is only present if the user
has first saved a parameter set by labelleing a parameter set 'saveAs'
field with a character string.  Enables more efficient setup of
processing when the user will be processing several datasets with
similar parameters.
Merge branch 'master' of github.com:sneumann/RAMClustR