can't support .net(windows),if use windows you can choose appveyor

使用步骤

1. add .travel.yml
2. to travel.io to make a project enable
3. copy the status image to README.md

example

language: csharp
sudo: required
dist: trusty
env:
    - CLI_VERSION=latest

addons:
    apt:
        packages:
        - gettext
        - libcur14-openssl-dev
        - libicu-dev
        - libssl-dev
        - libunwind8
        - zlib1g

os:
    - linux
    - osx

branches:
    only:
    - master

install:
    - export DOTNET_INSTALL_DIR="$PWD/.dotnetcli"
    - curl -sSL -sSL https://raw.githubusercontent.com/dotnet/cli/rel/1.0.0/scripts/obtain/dotnet-install.sh | bash /dev/stdin --version "$CLI_VERSION" --install-dir "$DOTNET_INSTALL_DIR"
    - export PATH="$DOTNET_INSTALL_DIR:$PATH"

script:
    - ./build.sh