Added ability to ccnx wrapper that will allow one to send interest and wait for content to be retrieved or timeout (untested).

+ (Alex) simplified implementation of get method

Change-Id: I2a62afac6ca58b22e2d7f389b1cdd6ff1690c77e
diff --git a/ccnx/ccnx-wrapper.h b/ccnx/ccnx-wrapper.h
index 69bebbd..418dde5 100644
--- a/ccnx/ccnx-wrapper.h
+++ b/ccnx/ccnx-wrapper.h
@@ -95,6 +95,9 @@
   bool
   verifyPco(PcoPtr &pco);
 
+  PcoPtr
+  get (const Name &interest, const Selectors &selector = Selectors(), double maxWait = 4.0/*seconds*/);
+
 private:
   CcnxWrapper(const CcnxWrapper &other) {}