Move module back into src/ directory.

Author: ericnorris

package.json

@@ -7,7 +7,7 @@
         "type": "git",
         "url": "https://github.com/ericnorris/striptags.git"
     },
-    "main": "striptags.js",
+    "main": "src/striptags.js",
     "homepage": "https://github.com/ericnorris/striptags",
     "bugs": "https://github.com/ericnorris/striptags/issues",
     "version": "2.2.1",