add manual pages for calibrateIntensity
export calibrateIntensity
add TIC calibration to workflow demo
Merge branch 'master'

    Conflicts:
        DESCRIPTION
        NEWS
        man/MALDIquant-package.Rd
mark as deprecated: calibrate, standardizeTotalIonCurrent, totalIonCurrent<-
bump version number (calibrateIntensity added; closes #31)