Support for Arrays of @attributes (tests ok)

[razum2um]

on upstream/master it acts unexpectedly
see tests on upstream

..............................FF..............................

Failures:

  1) Gyoku::Hash.to_xml recognizes array of attributes
     Failure/Error: to_xml(hash).should == '<category name="one"></category><category name="two"></category>'
       expected: "<category name=\"one\"></category><category name=\"two\"></category>"
            got: "<category></category><category></category>" (using ==)
     # ./spec/gyoku/hash_spec.rb:214:in `block (3 levels) in <top (required)>'

  2) Gyoku::Hash.to_xml recognizes array of attributes with selfclosing tag
     Failure/Error: to_xml(hash).should == '<category name="one"/><category name="two"/>'
       expected: "<category name=\"one\"/><category name=\"two\"/>"
            got: "<category></category><category></category>" (using ==)
     # ./spec/gyoku/hash_spec.rb:221:in `block (3 levels) in <top (required)>'

Finished in 0.0277 seconds
62 examples, 2 failures

this fixes it

[rubiii]

thanks @razum2um! could you add some information about this to the changelog?

[razum2um]

@rubiii see updated README and let me know, what you think

[razum2um]

Would be glad to add ruby-2.0 to travis matrix (now passed) & bump version

[rubiii]

this looks very good. thanks again! i left a comment on a hacky piece of code i'd like to see resolved,
but apart from that i'd be happy to merge.

[razum2um]

@rubiii yeah, i got it working without hack

[rubiii]

perfect 👍