Description of the implemented Synchronization Method

[AlexanderNenninger]

Currently it is a little difficult to evaluate, whether Syncing fits any given synchronization task. It would be nice, if there was either a precise description of the mathematical method in the readme, or a reference to such a description (e.g. a paper/wikipedia/...).

For example it unclear from the readme, whether the method implemented works on time series of of varying length and/or sampling rate.