Add gimite/web-socket-js submodule for DFSG compliance.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "include/web-socket-js-project"]
+	path = include/web-socket-js-project
+	url = https://github.com/gimite/web-socket-js.git

include/web-socket-js-project

@@ -0,0 +1 @@
+Subproject commit 7677e7a954561cc44dac7659219bef768c904b62