destination() overrides _ogrOutPath for greater flexibility
Somewhat support PostgreSQL driver (must not output zip)
Error if ogr2ogr exit code is not zero
project(dest, null) removes default sourceSrs
options([]) appends custom parameters
Style: semicolons
.skipfailures(bool) with optional argument. Do not skip failures by default.
Merge pull request #2 from kapouer/master

Example of PostgreSQL support