Merge pull request #54 from diogro/master

Fixing tests and bug in CalcRepeatability
BootstrapRepRandomSkewers para cov e cor

Caro, em teoria arrumei o issue #36
Merge pull request #55 from alexhubbe/patch-1

BootstrapRepRandomSkewers para cov e cor
Update BoostrapRS docs to include correlation
building docs