Added displaying of demo data by default.  Message informs the user of usage of demo data.
Changed the path to Excel template files to be more robust.
Passing additional argument to the Cairo function. Without this, the PlotTests plot does not work on R> ~ 3.0 for some reason. (The plotting characters are extremely large - seems to be connected to par())
VersionUp
Added .xlsx as accepted MIME type for data files.
Added extra columns to the Excel data file. VersionUp
Changed data example to simplify development.
Template fix column type.
Another fix of overriding Excel automaticity.
Dates still problematic.
Now works with additional variable of Measurement.
Changed data loading functions - DATA nad PATIENTS sheets are now loaded separately in a way that merging will be possible.
Created merged data frame.
Template data now a little more variable.
Added code for plotting plotPropWithSymptoms graph.
Varying demo data.
bugfix
Added dependency on dplyr
Reverted to plyr instead of ddply (which requires R>3.0.2).
removed reference to dplyr