Usage: php build-data.php [icu-version] [icu-binaries-path]

Builds or update the ICU data in Symfony2 for a specific ICU version. If the
ICU version or the path to the binaries are not provided, it will build the
latest version released using the genrb found in the environment path.

Examples:

    php build-data.php 4.2
    It will build the ICU data using the 49 version data

    php build-data.php 4.2 /path/to/icu/bin
    It will build the ICU data using the 49 version data and the genrb and
    icu-config binaries found in the environment path

It is recommended to use the ICU binaries in the same version of the desired
version to build the data files.

Read the UPDATE.txt file for more info.