Visual Studio Project Modifications

- Visual Studio: Fixed project to work with changes made to separate
Wren's cli and file loading code
- Visual Studio: Added another project to the solution that builds Wren
as a static library, and modified the original VS project to use it.

.gitignore

@@ -30,4 +30,8 @@ ipch/
 *.suo
 *.user
 *.userosscache
-*.sln.docstates
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Rr]elease/