remove using namespace std; from header
Merge pull request #11 from openiSOFT/master

changed (forgot to change) isnan to grt_isnan
Merge branch 'master' of https://github.com/nickgillian/grt
added nodeID to Node
added null rejection to Decision Tree
changed Euclidean distance metric to squared Euclidean distance
updated change log
fixed HighPassFilter classType bug
updated GRT GUI pro file
updated readme
updated GUI
updated GUI
updated GUI
fixed linux host endian bug
added host endianness for OSX
updated Processing Classification example
Merge branch 'master' of https://github.com/nickgillian/grt
added grt pkgconfig for UNIX/Linux