diff --git a/.gitignore b/.gitignore
index d5a2d2be..bdbe061e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,6 @@ stupid
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+
+# Files from IDE
+*.idea/
diff --git a/README.md b/README.md
index d098ed8c..54ad0ef4 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 ## Why Stupid
 
-Sometimes we need to test performance of a deployed Fabric network with ease. There are many excellent projects out there, i.e. Hyperledger Caliper. However, we sometimes just need a tiny, handy tool, like `Stupid`.
+Sometimes we need to test performance of a deployed Fabric network with ease. There are many excellent projects out there, i.e. Hyperledger Caliper. However, we sometimes just need a tiny, handy tool, like `stupid`.
 
 About the name: [Keep It Simple, Stupid](https://en.wikipedia.org/wiki/KISS_principle)
 
@@ -26,13 +26,19 @@ This tool is so stupid that *it will not be the bottleneck of performance test*
 
 ## How to use it
 
-### Make sure you have Go 1.12 installed
+### Prerequisites
 
-### clone this repo and run `go build` at root dir
-This is a go module project so you don't need to clone it into `GOPATH`. It will download required dependencies automatically, which may take a while depending on network connection. Once it finishes building, you should have a executable named `stupid`.
+Go1.11 or higher. Go1.13 is recommended.
 
-### modify `config.json` according to your network
-This is a sample:
+### Install
+
+You need to build from source for now (Docker image on the way).
+
+Clone this repo and run `go build` at root dir. This is a go module project so you don't need to clone it into `GOPATH`. It will download required dependencies automatically, which may take a while depending on network connection. Once it finishes building, you should have a executable named `stupid`.
+
+### Configure
+
+Modify `config.json` according to your network. This is a sample:
 ```json
 {
   "peer_addr": "peer0.org1.example.com:7051",
@@ -57,15 +63,21 @@ This tool sends traffic as a Fabric user, and requires following configs
 
 `mspid`: MSP ID that the user is associated to
 
-`private_key`: path to the private key. If you are using BYFN as your base, this can be `crypto-config/peerOrganizations/org1.example.com/users/User1@org1.example.com/msp/keystore/priv_sk`
+`private_key`: path to the private key. If you are using BYFN as your base, this can be:
+```
+crypto-config/peerOrganizations/org1.example.com/users/User1@org1.example.com/msp/keystore/priv_sk
+```
 
-`sign_cert`: path to the user certificate. If you are using BYFN as your base, this can be `crypto-config/peerOrganizations/org1.example.com/users/User1@org1.example.com/msp/signcerts/User1@org1.example.com-cert.pem`
+`sign_cert`: path to the user certificate. If you are using BYFN as your base, this can be:
+```
+crypto-config/peerOrganizations/org1.example.com/users/User1@org1.example.com/msp/signcerts/User1@org1.example.com-cert.pem
+```
 
 `tls_ca_certs`: this contains TLS CA certificates of peer and orderer. If tls is disabled, leave this blank. Otherwise, it can be `crypto-config/peerOrganizations/org1.example.com/tlsca/tlsca.org1.example.com-cert.pem` from peer and `crypto-config/ordererOrganizations/example.com/tlsca/tlsca.example.com-cert.pem` from orderer
 
 `channel`: channel name
 
-`chaincode`: chaincode to invoke
+`chaincode`: chaincode to invoke. There is an example chaincode in `chaincodes/sample.go`, which simply puts `key:value`. This is closely related to `args` parameter.
 
 `args`: arguments to send with invocation, depending on your chaincode implementation. The chaincode used by this sample can be found in `chaincodes/sample.go`
 
@@ -73,7 +85,9 @@ This tool sends traffic as a Fabric user, and requires following configs
 
 `client_per_conn`: number of clients per connection used to send proposals to peer. If you think client has not put enough pressure on Fabric, increase this.
 
-### Run `stupid config.json 40000` to generate 40000 transactions to Fabric.
+### Run
+
+Execute `./stupid config.json 40000` to generate 40000 transactions to Fabric.
 
 *Set this to integer times of batchsize, so that last block is not cut due to timeout*. For example, if you have batch size of 500, set this to 500, 1000, 40000, 100000, etc.
 
diff --git a/go.mod b/go.mod
index 3aacf7d0..e799ad08 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module stupid
+module github.com/guoger/stupid
 
 go 1.12
 
diff --git a/main.go b/main.go
index c94d0c6b..df2ef1c9 100644
--- a/main.go
+++ b/main.go
@@ -6,7 +6,7 @@ import (
 	"strconv"
 	"time"
 
-	"stupid/infra"
+	"github.com/guoger/stupid/infra"
 )
 
 func main() {