use sensible defaults and keep the build quite

Makefile.conf

@@ -8,7 +8,7 @@ HERE:=$(dir $(lastword $(MAKEFILE_LIST)))
 
 # Defaults
 DEBUG=1
-PREFIX?=$(HOME)/local
+PREFIX?=$(HOME)
 ENGINE_LIB_PATH=$(PREFIX)/lib
 ENGINE_INC_PATH=$(PREFIX)/include
 
@@ -26,10 +26,7 @@ endif
 
 ######### Overrides #########
 ifneq ("$(wildcard $(HERE)local.conf)","")
-    $(info including: $(HERE)local.conf)
     -include $(HERE)local.conf
-else
-    $(info Optional build config not found: $(HERE)local.conf)
 endif
 
 ifeq ($(DEBUG),1)