sampleRate documentation issue

[kiranbayram]

As you can see with the link below, in documentation sampleRate is explained as percentage which causes some users to use values between 0-100 but expected value is actually between 0-1. Could you please update the documentation to sth like:

sampleRate:
 rate of the sampling (expected value between 0.0 and 1.0)

java-dogstatsd-client/src/main/java/com/timgroup/statsd/StatsDClient.java

Line 62 in 2c972e6

* percentage of time metric to be sent