Minor grammar correction: let's
Edits readability
Merge pull request #727 from bcrowe/grammar-lets

Minor grammar correction: let's
Merge pull request #728 from guywarner/master

Edits for readability
Updated docs to use 2.4 in the composer.json example
Merge pull request #729 from alecho/patch-1

Updated docs to use 2.4 in the composer.json example
Grammer fix on en/contributing/code.rst

fixed confusing grammar
Merge pull request #731 from clawsonm/patch-1

Grammer fix on en/contributing/code.rst