unify library name for self references in documentation

[Xavier-Redondo]

in the documentation we refer to our library using different names: bauta, bauta.js, bautaJS, etc...

to simplify and make more consistent the documentation only acceptable name for bauta.js in documentation should be either Bauta.js or bauta.js.

Any other mention of the library itself should be changed to these accepted names.

Note: there is no need to make changes in code, test or example snippets, since in code it may acceptable to use another naming convention.