Now we have cool animations during fetching data from API!
And usage is simple for implementing! Only call @animated for a function
and we will see a animation until the function returns the result!

For some sanity uses, the function decorated should not printing anything
to not conflicting with the animation.

Some fixes was done about annoying bugs, like the 'today' variable undefined
and the crazy login writing your credentials before validate the login.

CHANGELOG:
✔ Add animations with the @animated decorator (previously called @spinnered)
✔ Add colored login: login header & [in]valid credentials events
✔ General refactoring on cli.py, more clear code and remove global variables
✔ Fixed bug about 'today' undefined when the user finish some series
✔ Sigint output colorized with 'red'
✔ Avoid writing the config file until validate login (this fix some annoying troubles)
✔ Replace all static images from readme.md to useful gifs
✔ Regex exception handling as @checked_regex decorator
✔ Add requirements badge to readme.md
✔ add a lot of funny emoji to errors message