Update getting-started.rst

Tell Doctrine to create the schema, so it uses the parameters.yml database information.
Fix typo
Merge pull request #399 from felds/patch-2

Fix typo
Merge pull request #398 from felds/patch-1

Update getting-started.rst
Fixed explanation for doctrine:database:create
Merge pull request #400 from dantleech/doc_fix

Fixed explanation for doctrine:database:create
Fixed old naming
Wrote 'The Big picture'
English fixes
Fixed comments
Created 'The Model'
Fixed ending of first chapter
Created 3th chapter: 'The router'
Fixed comments
Created Third Party Bundles chapter
Finished Quick Tour
Fixed link
Fixed indentation
Removed section numbering
Applied comments from @dbu