message: use correct case for wamp
diff: Here is what programming with **wampcc** looks like:
  -**Establishing a wamp session**
  +**Establishing a WAMP session**
  -Before a wamp session can be established, a `tcp_socket` has to be created and
  -connected to a wamp server.
  +Before a WAMP session can be established, a `tcp_socket` has to be created and
  +connected to a WAMP router / dealer server.
  Once the connected socket is available, the `wamp_session` object is constructed
  -and an attempt is made to logon to a wamp realm.
  +and an attempt is made to logon to a realm.
  All **wampcc** objects make use of a shared `kernel` object, which provides the
  internal threads and socket IO.
  @@ -64,7 +64,8 @@ if (not session->is_open())
  **Calling a remote procedure**
  -C++ lambdas are used to process the asynchronous result of a wamp call, and this usage pattern is the same for other kinds of wamp request.
  +C++ lambdas are used to process the asynchronous result of a call request, and
  +this usage pattern is the same for other kinds of request.
  ```c++
  session->call(
  