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+# Overview
+
+[![Build Status](https://travis-ci.org/bradleyfalzon/revgrep.svg?branch=master)](https://travis-ci.org/bradleyfalzon/revgrep) [![Coverage
+Status](https://coveralls.io/repos/github/bradleyfalzon/revgrep/badge.svg?branch=master)](https://coveralls.io/github/bradleyfalzon/revgrep?branch=master) [![GoDoc](https://godoc.org/github.com/bradleyfalzon/revgrep?status.svg)](https://godoc.org/github.com/bradleyfalzon/revgrep)
+
+`revgrep` is a CLI tool used to filter static analysis tools to only lines changed based on a commit reference.
+
+# Install
+
+```bash
+go get -u github.com/bradleyfalzon/revgrep/...
+```
+
+# Usage
+
+In the scenario below, a change was made causing a warning in `go vet` on line 5, but `go vet` will show all warnings.
+Using `revgrep`, you can show only warnings for lines of code that have been changed (in this case, hiding line 6).
+
+```bash
+[user@host dir (master)]$ go vet
+main.go:5: missing argument for Sprintf("%s"): format reads arg 1, have only 0 args
+main.go:6: missing argument for Sprintf("%s"): format reads arg 1, have only 0 args
+[user@host dir (master)]$ go vet |& revgrep
+main.go:5: missing argument for Sprintf("%s"): format reads arg 1, have only 0 args
+```
+
+`|&` is shown above as many static analysis programs write to `stderr`, not `stdout`, `|&` combines both `stderr` and
+`stdout`. It could also be achieved with `go vet 2>&1 | revgrep`.
+
+`revgrep` CLI tool will return an exit status of 1 if any issues match, else it will return 0. Consider using
+`${PIPESTATUS[0]}` for the exit status of the `go vet` command in the above example.
+
+```
+Usage: revgrep [options] [from-rev] [to-rev]
+
+from-rev filters issues to lines changed since (and including) this revision
+  to-rev filters issues to lines changed since (and including) this revision, requires <from-rev>
+
+  If no revisions are given, and there are unstaged changes or untracked files, only those changes are shown
+  If no revisions are given, and there are no unstaged changes or untracked files, only changes in HEAD~ are shown
+  If from-rev is given and to-rev is not, only changes between from-rev and HEAD are shown.
+
+    -d    Show debug output
+      -regexp string
+              Regexp to match path, line number, optional column number, and message
+```
+
+# Other Examples
+
+Issues between branches:
+```bash
+[user@host dir (feature/branch)]$ go vet |& revgrep master
+```
+
+Issues since last push:
+```bash
+[user@host dir (master)]$ go vet |& revgrep origin/master
+```