Added ModifyCaraProtFile.py and renumberProtFile.py, which are very helpful scripts for combining assignments of two domains into a single CARA repository for the two-domain construct. ModifyCaraProtFile.py is used for calibrating the two domain assignments relative to eachother, while renumberProtFile.py renumbers the spins so that the two prot files can have non-overlapping spin numbers, and can therefore be imported into CARA sequentially, without overwriting spin data.