Update API documentation.
Add the evaluateXPath() static method.
Introduce conditions!

New components: <if test="…" />, <elseif test="…" /> and <else />.
[auto] Merge from Xyl

    • #f6683fd — Update API documentation. (Ivan Enderlin, 2013-09-04)
    • #93e2759 — Add the evaluateXPath() static method. (Ivan Enderlin, 2013-09-04)
    • #125b3e5 — Introduce conditions! (Ivan Enderlin, 2013-09-06)

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Merge remote branch 'library-xyl/master'