Sexify README :lipstick:
Merge pull request #12 from Matthieu-Riou/readmeUpdate

Sexify README
Correct the erase method
Better erase & move left cursors
+ tests of course :dancer:
Fix moveLeft
Add a better moveCursorRight
Still work to do on left & right
Keep it simple, nan ?
Keep it simple, but still as expected by users ;)
Simplier moveCursorUp and moveCursorDown
Using pattern matching \o/
Fix styling :lipstick:
Merge pull request #17 from Matthieu-Riou/cursorProposition

Cursor proposition
Merge pull request #13 from Matthieu-Riou/editorCorrection

Correction of Editor
A first manager
Add methods interacting with the current Editor
Corrections
Add some test units