Implementación inicial de la cola de comandos.
Changes to the command queue feature.

This commit adds the basic functionality but there are still some bugs that need to be ironed out.
Finished the implementation of the command queue. The code might need polishing and the function "getCommandFromQueue" should be renamed to something more meaningful.
Added command history feature.

This feature allows people to jump to the previous or next command, they typed on the console.

Signed-off-by: fdemian <demian.fc@gmail.com>
Added the files found in the gh-pages branch. These files should be under the main branch's version control so that changes in the documentation can be made without touching that branch.
Rename: tutorial.html -> Tutorial.html.
Modified index to point to the tutorial pages.
Removed file.
Added file.
Merge branch 'master' of https://github.com/fdemian/jqTerminal into gh-pages
Renamed index.