Add support to YAML

[Relfos]

Support for YAML. Should use the same interface / naming conventions as the JSON and XML parsers.

More info on the format http://www.yaml.org/start.html

[simondankelmann]

Hi Relfos,
first of all thanks for sharing you Work!
Unfortunately i am having a little issue while converting XML to YAML.

For example the following XML:

Value 1 Value 2

is converted to YAML as:

--- #
:
xmlNode:
childNode:
item1:Value 1
item2:Value 2

Which is not parseable. A parseable YAML string would be:

xmlNode:
childNode:
item1: Value 1
item2: Value 2

The first two Lines seem to be obsolete, and "item1:Value 1" needs to be "item1: Value 1".

Hope this might be helpful,
Simon

[Relfos]

Hi Simon, this library support for YAML is still very experimental, as while I use this library exhaustively for several products, the only part that is really battle tested is JSON and XML.

Can you include a bit of code that generates that example of conversion from XML to YAML with those sample values?
That would make it faster for me to fix the problem, thank you!