Add a baseline for the empty test

This adds a baseline for the empty module test, and it passes.
Unfortunately, because module names are absolute file paths, this
baseline file has my machine's specific path embedded in it.  I want
to lock these in so they are passing as I make progress.  Sometime
later this morning I'll fix the module naming to be "relative" and
more Mu-friendly, and this issue will go away.

tools/mujs/package.json

@@ -7,7 +7,7 @@
   "main": "bin/lib/index.js",
   "typings": "bin/lib/index.d.ts",
   "scripts": {
-    "build": "tsc && tslint cmd/*.ts cmd/**/*.ts lib/*.ts lib/**/*.ts && npm run copytestdata",
+    "build": "tsc && tslint cmd/*.ts cmd/**/*.ts lib/*.ts lib/**/*.ts tests/*.ts tests/**/*.ts && npm run copytestdata",
     "copytestdata": "find tests/output/* -type d -exec cp -R {} bin/tests/output/ \\;",
     "postinstall": "typings install",
     "test": "npm run cov && npm run covreport",

tools/mujs/tests/output/empty/Mu.out.json

@@ -0,0 +1,24 @@
+{
+    "name": "TODO",
+    "modules": {
+        "/Users/joeduffy/dev/code/src/github.com/marapongo/mu/tools/mujs/bin/tests/output/empty/empty.ts": {
+            "kind": "Module",
+            "name": {
+                "kind": "Identifier",
+                "ident": "/Users/joeduffy/dev/code/src/github.com/marapongo/mu/tools/mujs/bin/tests/output/empty/empty.ts"
+            },
+            "members": {},
+            "loc": {
+                "file": "/Users/joeduffy/dev/code/src/github.com/marapongo/mu/tools/mujs/bin/tests/output/empty/empty.ts",
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 0
+                }
+            }
+        }
+    }
+}