added: rules for ingnoring precompiled headers for C/C++

C++.gitignore

@@ -4,6 +4,10 @@
 *.o
 *.obj
 
+# Precompiled Headers
+*.gch
+*.pch
+
 # Compiled Dynamic libraries
 *.so
 *.dylib

C.gitignore

@@ -4,6 +4,10 @@
 *.obj
 *.elf
 
+# Precompiled Headers
+*.gch
+*.pch
+
 # Libraries
 *.lib
 *.a