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+# prebuild-install
+
+[![Build Status](https://travis-ci.org/prebuild/prebuild-install.svg?branch=master)](https://travis-ci.org/prebuild/prebuild-install)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](http://standardjs.com/)
+
+> A command line tool for easily install prebuilds for multiple version of node/iojs on a specific platform.
+
+`prebuild-install` supports installing prebuilt binaries from GitHub by default.
+
+## Usage
+
+Change your package.json install script to:
+```
+...
+  "scripts": {
+    "install": "prebuild-install || node-gyp rebuild"
+  }
+...
+```
+
+### Requirements
+
+You need to provide prebuilds made by [prebuild](https://github.com/mafintosh/prebuild)
+
+### Help
+```
+prebuild-install [options]
+
+  --download    -d  [url]       (download prebuilds, no url means github)
+  --target      -t  version     (version to install for)
+  --runtime     -r  runtime     (Node runtime [node or electron] to build or install for, default is node)
+  --path        -p  path        (make a prebuild-install here)
+  --build-from-source           (skip prebuild download)
+  --verbose                     (log verbosely)
+  --libc                        (use provided libc rather than system default)
+  --debug                       (set Debug or Release configuration)
+  --version                     (print prebuild-install version and exit)
+ ```
+
+When `prebuild-install` is run via an `npm` script, options
+`--build-from-source`, `--debug` and `--download`, may be passed through via
+arguments given to the `npm` command.
+
+### Custom binaries
+The end user can override binary download location through environment variables in their .npmrc file.  
+The variable needs to meet the mask `% your package name %_binary_host` or `% your package name %_binary_host_mirror`. For example:
+```
+leveldown_binary_host=http://overriden-host.com/overriden-path
+```
+Note that the package version subpath and file name will still be appended.  
+So if you are installing `leveldown@1.2.3` the resulting url will be:  
+```
+http://overriden-host.com/overriden-path/v1.2.3/leveldown-v1.2.3-node-v57-win32-x64.tar.gz
+```
+
+## License
+
+MIT