Fix travis: NVM seems to have renamed its iojs versions.

Author: cscott

.travis.yml

@@ -40,15 +40,15 @@ matrix:
        env: NODE_VERSION="4.0.0" PUBLISHABLE=false
      - os: linux
        compiler: clang
-       env: NODE_VERSION="iojs-3.3.1" # node abi 45
+       env: NODE_VERSION="iojs-v3.3.1" # node abi 45
      - os: linux
        compiler: clang
-       env: NODE_VERSION="iojs-3.1.0" PUBLISHABLE=false
+       env: NODE_VERSION="iojs-v3.1.0" PUBLISHABLE=false
      - os: linux
        compiler: clang
-       env: NODE_VERSION="iojs-2.4.0" PUBLISHABLE=false
+       env: NODE_VERSION="iojs-v2.4.0" PUBLISHABLE=false
      - os: linux
-       env: NODE_VERSION="iojs-2.4.0" BUILD_X86=true # node abi 44
+       env: NODE_VERSION="iojs-v2.4.0" BUILD_X86=true # node abi 44
 # disabled because libphp5-embed package is not on whitelist yet
 # https://github.com/travis-ci/apt-package-whitelist#package-approval-process
 #     # test building against external libphp5
@@ -64,10 +64,10 @@ matrix:
        env: NODE_VERSION="4.1.2" # node abi 46
      - os: osx
        compiler: clang
-       env: NODE_VERSION="iojs-3.3.1" # node abi 45
+       env: NODE_VERSION="iojs-v3.3.1" # node abi 45
      - os: osx
        compiler: clang
-       env: NODE_VERSION="iojs-2.4.0" # node abi 44
+       env: NODE_VERSION="iojs-v2.4.0" # node abi 44
 
 before_install:
 - export PUBLISHABLE=${PUBLISHABLE:-true}