Installing Embark Framework have an error as follows,

[yunandaraung]

npm ERR! git clone --template=/home/yunandar/.npm/_git-remotes/_templates --mirror git://github.com/frozeman/WebSocket-Node.git /home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e: Cloning into bare repository '/home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e'...
npm ERR! git clone --template=/home/yunandar/.npm/_git-remotes/_templates --mirror git://github.com/frozeman/WebSocket-Node.git /home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e: fatal: unable to connect to github.com:
npm ERR! git clone --template=/home/yunandar/.npm/_git-remotes/_templates --mirror git://github.com/frozeman/WebSocket-Node.git /home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e: github.com[0: 13.229.188.59]: errno=Connection timed out
npm ERR! git clone --template=/home/yunandar/.npm/_git-remotes/_templates --mirror git://github.com/frozeman/WebSocket-Node.git /home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e: github.com[1: 52.74.223.119]: errno=Connection timed out
npm ERR! git clone --template=/home/yunandar/.npm/_git-remotes/_templates --mirror git://github.com/frozeman/WebSocket-Node.git /home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e: github.com[2: 13.250.177.223]: errno=Connection timed out
npm WARN optional Skipping failed optional dependency /embark/chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.2.4
npm ERR! Linux 4.15.0-20-generic
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "-g" "embark"
npm ERR! node v8.10.0
npm ERR! npm v3.5.2
npm ERR! code 128

npm ERR! Command failed: git clone --template=/home/yunandar/.npm/_git-remotes/_templates --mirror git://github.com/frozeman/WebSocket-Node.git /home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e
npm ERR! Cloning into bare repository '/home/yunandar/.npm/_git-remotes/git-github-com-frozeman-WebSocket-Node-git-browserifyCompatible-6c68775e'...
npm ERR! fatal: unable to connect to github.com:
npm ERR! github.com[0: 13.229.188.59]: errno=Connection timed out
npm ERR! github.com[1: 52.74.223.119]: errno=Connection timed out
npm ERR! github.com[2: 13.250.177.223]: errno=Connection timed out
npm ERR!
npm ERR!
npm ERR!

[legodude17]

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