Add missing bind-to-sendCQ.
 - Without this, provider may not progress the tx operations.
 - Even though user does not need TX completions for inject operations
   it must bind to a CQ for checking error events.

Signed-off-by: Jithin Jose <jithin.jose@intel.com>
Merge pull request #97 from jithinjosepkl/pr-examples

Add missing bind-to-sendCQ.