contentdb replaced by new mimedb

pkg/mimedb/Makefile

@@ -0,0 +1,17 @@
+# Generate db.go from db.json downloaded nodejs mime-db project.
+# NOTE: Autogenerated db.go needs to be vet proofed. \
+	Manually edit json -> JSON for all variable names
+all: download build
+
+# Download db.json from NodeJS's mime-db project. It is under MIT license.
+download:
+	@mkdir db
+	@wget -nv -q https://cdn.rawgit.com/jshttp/mime-db/master/db.json -O db/db.json
+
+
+# After generating db.go, clean up downloaded db.json.
+build: download
+	@go run util/gen-db.go db/db.json > db.go
+	@rm -f db/db.json
+	@rm -rf db
+	@echo Generated \"db.go\".