Updated version to 1.9.3 (from 2.x).

master branch was intended to be the latest and greatest code for the
2.x re-factor (commands into their own files), but that has been
shelved. 1.x was essentially code from master cherry-picked, and this
has proven problematic in keeping in sync, so I am simplifying things.

master branch was essentially 1.x anyway since there was no active
development on 2.x according to the former roadmap.
diff --git a/package.json b/package.json
index 3feba48..43bb1ca 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ios-deploy",
-  "version": "2.0.0",
+  "version": "1.9.3",
   "os": [
     "darwin"
   ],