chore(build): rename ionic directory to src and update all references in the build process.

src/ionic.wp.scss

@@ -0,0 +1,13 @@
+// Ionic: Windows
+@charset "UTF-8";
+
+// Core Components
+@import "components.core";
+
+// Windows Components
+@import "components.wp";
+
+// Windows Body
+body {
+  @include wp-body();
+}