Allow changing the wiki path for make

For example, bouncepaw uses ~/src, I use ~/Code and ~/sources. Many
other people use different prefixes.

.gitignore

@@ -1 +1,2 @@
 mycorrhiza
+config.mk

Makefile

@@ -1,13 +1,15 @@
-WIKI=~/src/example-wiki
+.POSIX:
+include config.example.mk
+include config.mk
 
 run: build
-	./mycorrhiza ${WIKI}
+	./mycorrhiza ${WIKIPATH}
 
 config_run: build
-	./mycorrhiza ${WIKI}
+	./mycorrhiza ${WIKIPATH}
 
 devconfig_run: build
-	./mycorrhiza ${WIKI}
+	./mycorrhiza ${WIKIPATH}
 
 build:
 	go generate

config.example.mk

@@ -0,0 +1 @@
+WIKIPATH=~/src/example-wiki