Update cd-command.cpp

Changed #import to #include
Update cd-command.h

Removed ../classes/ from #include on command.h to make it work in C++ IDE.
Update commander.cpp

Removed ../commands/ from ExternalCommand.cpp at header to run with IDE and Linux.
Update file-output.cpp

Fixed syntax of bool from boolean.
Fixed for loops with printing vectors to fix signed/unsigned mismatch

Replaced int i = 0 with size_t i = 0 in two spots (Line 55 and Line 74).
Update qkcompile.cpp

execlp() argument change in the script_call() method
Merge pull request #19 from MikeRyan52/master

master