Add note about unpatchall

README.md

@@ -62,6 +62,8 @@ func main() {
 
 Note that patching the method for just one instance is currently not possible, `PatchInstanceMethod` will patch it for all instances. Don't bother trying `monkey.Patch(instance.Method, replacement)`, it won't work. `monkey.UnpatchInstanceMethod(<type>, <name>)` will undo `PatchInstanceMethod`.
 
+If you want to remove all currently applied monkeypatches simply call `monkey.UnpatchAll`. This could be useful in a test teardown function.
+
 If you want to call the original function from within the replacement you need to use a `monkey.PatchGuard`. A patchguard allows you to easily remove and restore the patch so you can call the original function. For example:
 
 ```go

replace.go

@@ -18,6 +18,8 @@ func pageStart(ptr uintptr) uintptr {
 	return ptr & ^(uintptr(syscall.Getpagesize() - 1))
 }
 
+// from is a pointer to the actual function
+// to is a pointer to a go funcvalue
 func replaceFunction(from, to uintptr) (original []byte) {
 	jumpData := jmpToFunctionValue(to)
 	f := rawMemoryAccess(from, len(jumpData))

replace_unix.go

@@ -6,6 +6,7 @@ import (
 
 // this function is super unsafe
 // aww yeah
+// It copies a slice to a raw memory location, disabling all memory protection before doing so.
 func copyToLocation(location uintptr, data []byte) {
 	f := rawMemoryAccess(location, len(data))