use craigcitro's r-travis template
regenerate man pages with new roxygen2
add centroided mzXML and mzML test files
adjust test cases to centroided mzXML and mzML files
allow .parseMzMl to read centroided data
fix assignment operator
Merge branch 'master' into centroided
add .createMassObject helper function
.importMzXml and .importMzMl use .createMassOjbect now
add centroided support for all import* functions; closes #11
add massRange and minIntensity argument to createMassObject
add massRange and minIntensity support for all import* functions
replace .isCentroided by MALDIquant's isRegular
add massRange and minIntensity to import; run roxygen
fix index limited object creation
add ABSiex Analyze files support
add skip argument
add verbose argument to .createMassObject
add .importNetCdf; add Pietro Franceschi as contributor
add NetCDF test case