title: Can't find Python executable "/path/to/executable/python2.7", you can set the PYTHON env variable
body: <blockquote>
    <p>bufferutil@1.2.1 install /home/sudthenerd/polymer-starter-kit-1.2.1/node_modules/bufferutil > <strong>node-gyp rebuild  gyp ERR! configure error  gyp ERR! stack Error: Can't find Python executable "/path/to/executable/python2.7", you can set the PYTHON env variable</strong>. gyp ERR! stack     at failNoPython (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:401:14) gyp ERR! stack     at /usr/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:330:11 gyp ERR! stack     at F (/usr/lib/node_modules/npm/node_modules/which/which.js:78:16) gyp ERR! stack     at E (/usr/lib/node_modules/npm/node_modules/which/which.js:82:29) gyp ERR! stack     at /usr/lib/node_modules/npm/node_modules/which/which.js:93:16 gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:82:15) gyp ERR! System Linux 3.13.0-74-generic gyp ERR! command "/usr/bin/nodejs" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild" gyp ERR! cwd /home/sudthenerd/polymer-starter-kit-1.2.1/node_modules/bufferutil gyp ERR! node -v v5.3.0 gyp ERR! node-gyp -v v3.2.1 gyp ERR! not ok  npm WARN install:bufferutil@1.2.1 bufferutil@1.2.1 install: <code>node-gyp rebuild</code> npm WARN install:bufferutil@1.2.1 Exit status 1  > utf-8-validate@1.2.1 install /home/sudthenerd/polymer-starter-kit-1.2.1/node_modules/utf-8-validate > node-gyp rebuild  gyp ERR! configure error  gyp ERR! stack Error: Can't find Python executable "/path/to/executable/python2.7", you can set the PYTHON env variable. gyp ERR! stack     at failNoPython (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:401:14) gyp ERR! stack     at /usr/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:330:11 gyp ERR! stack     at F (/usr/lib/node_modules/npm/node_modules/which/which.js:78:16) gyp ERR! stack     at E (/usr/lib/node_modules/npm/node_modules/which/which.js:82:29) gyp ERR! stack     at /usr/lib/node_modules/npm/node_modules/which/which.js:93:16 gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:82:15) gyp ERR! System Linux 3.13.0-74-generic gyp ERR! command "/usr/bin/nodejs" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild" gyp ERR! cwd /home/sudthenerd/polymer-starter-kit-1.2.1/node_modules/utf-8-validate gyp ERR! node -v v5.3.0 gyp ERR! node-gyp -v v3.2.1 gyp ERR! not ok  npm WARN install:utf-8-validate@1.2.1 utf-8-validate@1.2.1 install: <code>node-gyp rebuild</code> npm WARN install:utf-8-validate@1.2.1 Exit status 1</p>
  </blockquote>