Raise minimum version to 1.25.0

Author: dhardy

.travis.yml

@@ -8,7 +8,7 @@ sudo: false
 # - x86_64, ARMv7, a Big-Endian arch (MIPS)
 matrix:
   include:
-    - rust: 1.22.0
+    - rust: 1.25.0
       install:
       script:
         - cargo test --tests --no-default-features

README.md

@@ -4,7 +4,7 @@
 [![Build Status](https://ci.appveyor.com/api/projects/status/github/rust-lang-nursery/rand?svg=true)](https://ci.appveyor.com/project/alexcrichton/rand)
 [![Latest version](https://img.shields.io/crates/v/rand.svg)](https://crates.io/crates/rand)
 [![Documentation](https://docs.rs/rand/badge.svg)](https://docs.rs/rand)
-[![Minimum rustc version](https://img.shields.io/badge/rustc-1.22+-yellow.svg)](https://github.com/rust-lang-nursery/rand#rust-version-requirements)
+[![Minimum rustc version](https://img.shields.io/badge/rustc-1.25+-yellow.svg)](https://github.com/rust-lang-nursery/rand#rust-version-requirements)
 [![License](https://img.shields.io/crates/l/rand.svg)](https://github.com/rust-lang-nursery/rand#license)
 
 A Rust library for random number generation.