adding data.R
added getRealColNames to return the unchanged list from features.txt; getActivityLabels now returns a character vector of the activity labels so the function's return value can be directly indexed; added loadAndMergeData to read in observations and activity data from the test and train sets, merging them together and returning the resulting dataframe; dropped loadTestData since it's handled in the aformentioned function now
renamed data.R -> run_analysis.R
Added variable re-name table, replaced select variable names with new naming scheme that lends itself to easily colsplit() later; updated loading data function to also load activity names and subjects adding new columns to the raw data set with those data.  the extract Mean and STD function now includes the subject and activity columns.  reshareAndSummarize melts the data, summarizes every measurement with the mean() function, and casts it such that each observation is a single row.
Added extensive comments to the source code, removing a few unnecessary comments from before. Added loading the reshape2 and plyr libraries. Write readme and codebook as well.
added tidy datatable