Initial upload of skeleton API
Updated README
Updated README
Now builds and passes selftest
Fixed man pages
Updated README to cover API
zapi is now working
Note that linger is msecs
Prepared for 1.0.1
Released version 1.1.0 of zapi

- zctx_thread_new() added to wrap thread creation
- child threads automatically get a pipe to talk back to their main thread
- ztcx objects in all child threads share same 0MQ context so can be used
  to create inproc sockets.
Updated for 1.1.1, improved docs
Added zclock class
Starting to move to self-documenting code
New README pulling in source doc chunks
Generated documentation
Generating documentation now
Fixed error in documentation generation
Undid some buggy changes to zhash
Fixed faulty dependency on libzfl
Generated documentation