Build script adjustments

Based on Apple's documentation (https://developer.apple.com/library/content/
documentation/Security/Conceptual/CodeSigningGuide/Procedures/Procedures.html)
custom paths must not be used for binaries, as they are left unsigned by
codesign app.

Change-Id: I628a3a9da15dfdbbf515b4c16a3d38590ae433f5
diff --git a/src/main.cpp b/src/main.cpp
index 9cfff3a..1dcee21 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -166,6 +166,10 @@
 int
 main(int argc, char *argv[])
 {
+  ndn::KeyChain keyChain;
+  ndn::Data data("/to/request/or/check/keychain/permissions");
+  keyChain.sign(data);
+
   qRegisterMetaType<ndn::shared_ptr<const ndn::Data>>();
   qRegisterMetaType<ndn::nfd::ForwarderStatus>();
   qRegisterMetaType<std::vector<ndn::nfd::FibEntry>>();