Added executable and doc directory to gitignore

.gitignore

@@ -15,6 +15,8 @@ qrc_*.cpp
 tmp
 debug
 release
-qgroundcontrol
*.wav
+qgroundcontrol
+*.wav
 qgroundcontrol.xcodeproj/**
-
+doc/html
+doc/doxy.log

doc/Doxyfile

@@ -585,7 +585,8 @@ INPUT_ENCODING         = UTF-8
 # *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx
 # *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py *.f90
 
-FILE_PATTERNS          =
+FILE_PATTERNS          = *.c *.h *.hpp *.hxx *.cc *.cpp *.cxx *.dox
+#FILE_PATTERNS          =
 
 # The RECURSIVE tag can be used to turn specify whether or not subdirectories
 # should be searched for input files as well. Possible values are YES and NO.