readme: stop advertising mesos 1.0 compat, no checks for this

Author: James DeFelice

README.md

@@ -28,7 +28,7 @@ The Mesos v0 API version of the bindings, located in `api/v0`, are more mature b
 ### Pre-Requisites
 - Go 1.7 or higher; https://golang.org/dl/
     - A standard and working Go workspace setup (multiple golang versions are tested via CI)
-- Apache Mesos 1.0 or newer; http://mesos.apache.org/downloads/
+- Apache Mesos 1.x; http://mesos.apache.org/downloads/
 - protoc compiler; https://github.com/google/protobuf/releases
     - v3.3.x is tested by CI and should be used for code generation
 - `govendor`; https://github.com/kardianos/govendor