add Go README and sample.go

bindings/go/README.md

@@ -0,0 +1,29 @@
+To download/update the Unicorn Go bindings, run:
+
+    go get -u github.com/unicorn-engine/unicorn/bindings/go
+
+A very basic usage example follows
+
+_(Does not handle most errors for brevity. Please see sample.go for a more hygenic example):_
+
+    package main
+
+    import (
+        "fmt"
+        uc "github.com/unicorn-engine/unicorn/bindings/go/unicorn"
+    )
+
+    func main() {
+        mu, _ := uc.NewUnicorn(uc.ARCH_X86, uc.MODE_32)
+        // mov eax, 1234
+        code := []byte{184, 210, 4, 0, 0}
+        mu.MemMap(0x1000, 0x1000)
+        mu.MemWrite(0x1000, code)
+        if err := mu.Start(0x1000, 0x1000+uint64(len(code))); err != nil {
+            panic(err)
+        }
+        eax, _ := mu.RegRead(uc.X86_REG_EAX)
+        fmt.Printf("EAX is now: %d\n", eax)
+    }
+
+An example program exercising far more Unicorn functionality and error handling can be found in sample.go.