Merge pull request #25 from MT2Analysis/MarioToMerge

Fixed skimming+pruning in a raw, and fixed basic skimming and pruning
talked with mario, reverting to previous code
new example version
added fullName, now option to update a file in writeToFile
added nicenames
new version: prettier plots, saving also analyses
Merge pull request #26 from MT2Analysis/pandolf

Pandolf
added createDatacards
Merge pull request #27 from MT2Analysis/pandolf

added createDatacards
new version of readAllFromFile
Merge pull request #28 from MT2Analysis/pandolf

new version of readAllFromFile
fixed readFromFile
Merge pull request #29 from MT2Analysis/pandolf

fixed readFromFile
removed comments
added possibility to load only samples in an id range
new version: reads from a ls of a dir
new version compatible with new version of MT2Sample
Merge pull request #30 from MT2Analysis/pandolf

Pandolf
prettier stack
added possibility to filter on file name