Add tldr page for brew package manager

osx/brew.md

@@ -0,0 +1,23 @@
+# brew
+
+> Package manager for OS X
+
+- Search formula
+
+`brew search {{text}}`
+
+- Install formula
+
+`brew install {{formula}}`
+
+- List installed formulae [with matching name]
+
+`brew list {{[text]}}`
+
+- Get latest version of installed formula (passing no formula updates all installed formulae)
+
+`brew upgrade {{[formula]}}`
+
+- Update brew
+
+`brew update`