Moved ProjectModel to json.net for GlobalSettings and Project.json. Kept LockFileReader using the old API as I don't have the cycles to add the tests for it at the moment.

Added unit tests covering parsing of Json for all the pieces of the project.json

Added a RawRuntimeOptions to Project and made Executable deserialize that into the runtimeOptions of runtimeconfig.json

Added tests to cover copying runtimeoptions during dotnet build.

TestAssets/TestProjects/PortableTests/PortableApp/project.json

@@ -16,5 +16,14 @@
         }
       }
     }
+  },
+
+  "runtimeOptions": {
+    "somethingString": "anything",
+    "somethingBoolean": true,
+    "someArray": ["one", "two"],
+    "someObject": {
+      "someProperty": "someValue"
+    }
   }
 }

TestAssets/TestProjects/PortableTests/StandaloneApp/project.json

@@ -22,5 +22,14 @@
     "centos.7-x64": {},
     "rhel.7.2-x64": {},
     "debian.8.2-x64": {}
+  },
+
+  "runtimeOptions": {
+    "somethingString": "anything",
+    "somethingBoolean": true,
+    "someArray": ["one", "two"],
+    "someObject": {
+      "someProperty": "someValue"
+    }
   }
 }