Improve readme format (#620)
Improve readme format (#620)

* [README]: Fix the table of contents so all the links work as expected.

* [README]: Improve section 2. Installation.

* [README]: Improve section 3. Updating, and fixes previous changes.

* [README]: Improve section 4. Usage

* [README]: Improve section 5. Artisan Console Commands.

* [README]: Adds some formating fixes.

* [README]: Add some main sections not documented on the Usage.

* [README]: Some format changes.

* [README]: Improve sections 6.1, 6.2 and 6.3

* [README]: Improve sections 6.4 to 6.10.

* [README]: Review and improve the remaning sections.

* [README]: Make some final adjustments.

* [README]: Minor spelling fixes.
JeroenNoten/Laravel-AdminLTE,JeroenNoten/Laravel-AdminLTE