add rebar.config.script to fall back to rebar2 style deps if using rebar2

rebar.config.script

@@ -0,0 +1,15 @@
+{ok, VSN} = application:get_key(rebar, vsn),
+[VSN1 | _] = string:tokens(VSN, "-"),
+[Maj, Min, Patch] = string:tokens(VSN1, "."),
+IsRebar3 = (list_to_integer(Maj) >= 3),
+
+
+Rebar2Deps = [
+              {cf, ".*", {git, "https://github.com/project-fifo/cf", {tag, "0.2.0"}}}
+             ],
+
+case IsRebar3 of
+    true -> CONFIG;
+    false ->
+        lists:keyreplace(deps, 1, CONFIG, {deps, Rebar2Deps})
+end.

src/erlware_commons.app.src

@@ -1,6 +1,6 @@
 {application,erlware_commons,
              [{description,"Additional standard library for Erlang"},
-              {vsn,"0.16.1"},
+              {vsn,"0.18.0"},
               {modules,[]},
               {registered,[]},
               {applications,[kernel,stdlib]},