remove travis and appveyor ci

.appveyor.yml

@@ -1,16 +0,0 @@
-os: 
-  - Visual Studio 2015
-  - Visual Studio 2013
-
-platform:
-  - Win32
-  - Win64
-
-before_build:
-  - ps: Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-Webrequest "https://raw.githubusercontent.com/tboox/xmake/dev/scripts/get.ps1" -UseBasicParsing).Content)) -ArgumentList "dev"
-  - cmd: xmake --version
-
-build_script:
-  - cmd: xmake repo --add xmake-repo-dev https://github.com/tboox/xmake-repo.git dev
-  - cmd: xmake -y -v
-

.travis.yml

@@ -1,19 +0,0 @@
-sudo: false
-language: C
-os:
-  - linux
-  - osx
-compiler:
-  - gcc
-  - clang
-
-install:
-  - git clone --branch=dev https://github.com/xmake-io/xmake.git xmake-io/xmake --depth 1
-  - cd ./xmake-io/xmake
-  - ./scripts/get.sh __local__
-  - cd -
-
-script:
-  - xmake repo --add xmake-repo-dev https://github.com/xmake-io/xmake-repo.git dev
-  - xmake -y -v
-