[CHANGE] Unified Navigation texts; removed link to step 6 (there is no step 6);
[CHANGE] fixing typos;
[CHANGE] added section about cleanup and sharing;
[ADD] final version of the swift mode for the tutorial;
[CHANGE] typos;
[CHANGE] replaced inline html preview (not working on github) to a screenshot;
[CHANGE] added a screenshot of the filled symbol popup;
[CHANGE] added xml highlighting to xml snippets;
[CHANGE] added an example to the support.-keywords;
[CHANGE] additional highlighting;
[CHANGE] removed ruby highlight from that one regex because of more confusing with highlight;
[CHANGE] changed confusing markdown;
[CHANGE] removed ruby highlight from that one regex because of more confusing with highlight;
[CHANGE] removed whitespace;
[CHANGE] non-ignored comment in markdown;
[FIX] non-ignored comment in markdown;
Merge branch 'feature/tutorial_check' into develop