In-progress commit of the Twitter API 1.1 changes.
Gave the global config proper block-specific values.
Improvements and additions.
Spaces for indenting.
Corrected the parameter check from _INT to _MULTILANG.
Many changes to use the 1.1 API and the wrapper libraries.
Whitespace.
Minor changes thanks to the Moodle Codechecker.
Markdown for the readme.
Final commit before the 0.3 (beta) release. It works with the new REST 1.1 API although some features NYI.