fix typo in readme

Let the above code be equivalent to the following code.

fix column ordering in composite index with relation fields

#660 Specifying a RETURNING or OUTPUT clause with QueryBuilder

for PostgreSQL UPDATE and DELETE qeries

Re-introduce PostgreSQL UPDATE and DELETE tests that currently fail

and correct tests accordingly
Add descriptive comments to all Methods (linking RETURNING and OUTP...

but UPDATE and DELETE not yet supported for PostgreSQL

Temporarily remove non-working tests

Update documentation to remove references to self-initialised arrays

Use the naming strategy on TreeRepository

fix typos and inaccuracies in README.md

Improve DirectoryExportedClassesLoader

Update MysqlDriver.ts to fix issue #610

added precision support in to MySql datetime data type;

Allow returning nulls for nullable boolean columns

fix ordering of columns in IndexMetadata

refactoring in drivers and query runners;

refactoring in drivers and query runners;

fixed closure-table failing tests

merge from typeorm/typeorm

Avoiding global npm installs