Accept multiple simple paths when accessing attributes.
Merge pull request #3 from pmcfadden/add_travis_build

Adding Travis Build
Merge branch 'master' of github.com:senguidanos/lazy-doc into senguidanos-master
Adding a separate usage in the acceptance specs for accessing multiple simple paths in one line.
Refactoring access method after addition of handling multiple attributes.
Lazily Raises AttributeNotFoundError for defined attributes not included in json