blade 安装

1. 安装jdk
2. 安装ninja
   git clone https://github.com/ninja-build/ninja.git
   cd ninja
   ./configure.py --bootstrap
   cp ninja ~/bin/
   3.安装blade
   git clone https://github.com/chen3feng/blade-build.git
   ./install.sh
   echo "export PATH=$PATH:~/bin/" >> ~/.bash_profile