我已经在我的32位linux铸币机中安装了nodejs v7.5.0和npm v4.1.2。虽然我是普通话＆＃39; npm install进入终端，它给了我这些信息而不是被安装npm包是：
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.0.17: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"ia32"})
npm WARN @angular/core@2.4.7 requires a peer of rxjs@^5.0.1 but none was installed.
npm WARN shwokat@1.0.0 No description
npm WARN shwokat@1.0.0 No repository field
现在哪里错了？如何解决它并正确安装npm包，请告诉我？