README: Add VMware Workstation and Fusion to supported hypervisors.

Now capstan works with VMware Workstation on Windows and Linux, Fusion
on Mac OS X.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Add wiki link for installation instructions

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Switch to new YAML library

The YAML parsing code is very verbose because of Gypsy. Switch to a new
YAML library suggested by Samuli Heljo that simplifies Capstan code a
lot.

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Merge pull request #66 from penberg/yaml

Switch to new YAML library
config
ci