Add contributors

Added @higgi13425  as a contributor for his much needed documentation editing!
diff --git a/.Rproj.user/441ADA46/sources/prop/AE6C9F23 b/.Rproj.user/441ADA46/sources/prop/AE6C9F23
index fbfe710..6723690 100644
--- a/.Rproj.user/441ADA46/sources/prop/AE6C9F23
+++ b/.Rproj.user/441ADA46/sources/prop/AE6C9F23
@@ -1,4 +1,4 @@
 {
-    "cursorPosition" : "11,100",
+    "cursorPosition" : "11,43",
     "scrollLine" : "4"
 }
\ No newline at end of file