Add gitattributesdb support. Update bash startup files. Small changes to other files.

.bashrc.d/imagebin

@@ -0,0 +1,11 @@
+#!/bin/bash - not strictly necessary, but helps nano with syntax highlighting.
+
+imagebin() {
+  # Throw an image file into imagebin.
+
+  [[ -z "$1" ]] || [[ ! -e "$1" ]] && {
+    printf "%s: %s\\n" "Usage" "${FUNCNAME[0]} <filename>" >&2
+    return 1
+  }
+  curl -F file="@$1" https://imagebin.ca/upload.php | grep '^url:' | cut -d: -f2-
+}