Add README

README.md

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+# ntgr
+
+`ntgr` is a TUI to facillitate interactions with Netgear Nighthawk routers.
+Currently it only suppports listing out the connected devices. While viewing the
+list of attached devices, one can press `i` to sort by IP address or `n` to sort
+by name (default).
+
+## Installation
+
+Without cloning the repo, one can run the following to install `ntgr`:
+
+```bash
+go install git.wbrawner.com/wbrawner/ntgr/cmd/ntgr@latest
+```
+
+If you've already clone the repo, you can use the following command:
+
+```bash
+make install
+```
+
+## Building
+
+To build, run the following:
+
+```bash
+make
+```