Don't use static Configuration

[drallgood]

When integrating the library into our project I had a few issues with the Configuration class.

The first problem is, that it uses the SystemClassloader to get its own properties file.
Might work in some cases, in our case it didn't.
I ended up creating my own jersey client without the static Configuration to get it running. Using static classes is a bad idea in most cases as it makes the whole thing untestable and error-prone.

[travel-cloud-simon]

Totally agree. Trying to run against the with-deps jar but cannot get it to load my own createsend.properties ...