Few more fixes, signing app, and adding sparkle

Change-Id: I33f6d846f5797245e37caf705bd3aa987a7f964e
diff --git a/res/ndn_sparkle_pub.pem b/res/ndn_sparkle_pub.pem
new file mode 100644
index 0000000..f6e6286
--- /dev/null
+++ b/res/ndn_sparkle_pub.pem
@@ -0,0 +1,36 @@
+-----BEGIN PUBLIC KEY-----
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+-----END PUBLIC KEY-----