update installation

docs/go-nebulas/tutorials/01-installation.md

@@ -1,6 +1,6 @@
 # Nebulas 101 - 01 Compile and Install Nebulas
 
-The current version of Nebulas Mainnet is 2.0, which is called Nebulas Nova. 
+The current version of Nebulas Mainnet is 2.1.1, which is called Nebulas Nova. 
 
 Nebulas Nova aims to discover the value of blockchain data, and it also means the future of collaboration.
 
@@ -21,8 +21,8 @@ Nebulas is implemented in Golang and C++.
 
 | Components | Description |
 | --- | --- |
-| [Golang](https://golang.org) | The Go Programming Language, version >= 1.11 |
-| [C++](https://en.wikipedia.org/wiki/C%2B%2B) | The C++ programming language, based on c++14 standard |
+| [Golang](https://golang.org) | The Go Programming Language, version >= 1.12 |
+
 
 ### Mac OSX
 
@@ -42,10 +42,10 @@ export GOPATH=/path/to/workspace
 
 ```bash
 # download
-wget https://dl.google.com/go/go1.11.linux-amd64.tar.gz
+wget https://dl.google.com/go/go1.12.linux-amd64.tar.gz
 
 # extract
-tar -C /usr/local -xzf go1.11.linux-amd64.tar.gz
+tar -C /usr/local -xzf go1.12.linux-amd64.tar.gz
 
 # environment variables
 export PATH=$PATH:/usr/local/go/bin
@@ -60,8 +60,7 @@ Clone source code with the following commands.
 
 ```bash
 # enter workspace
-mkdir -p $GOPATH/src/github.com/nebulasio
-cd $GOPATH/src/github.com/nebulasio
+cd /path/to/workspace
 
 # download
 git clone https://github.com/nebulasio/go-nebulas.git
@@ -73,88 +72,18 @@ cd go-nebulas
 git checkout master
 ```
 
-### Build NBRE
-
-NBRE is short for Nebulas Blockchain Runtime Environment, which is the platform that runs the core protocols and algorithms. 
-
-To build NBRE:
-
-```bash
-cd $GOPATH/src/github.com/nebulasio/go-nebulas/nbre
-
-# build dependencies
-# switch your shell to bash before running the script
-./prepare.sh
-
-# set up environment variables
-source env.set.sh
-
-# build NBRE
-mkdir build
-cd build & cmake -DRelease=1 ..
-make
-```
-
-The preparation steps listed above may take some time to complete. 
-
-
-### Install Go Dependencies
-
-Go dependencies in Go-Nebulas are managed by [Dep](https://github.com/golang/dep).
-
-| Components | Version | Description |
-| --- | --- | --- |
-
-
-[Dep](https://github.com/golang/dep) \| >= 0.3.1 \| Dep is a dependency management tool for Go. \|
-
-#### Install Dep
-
-* **Mac OSX**
-* Install Dep via [Homebrew](https://brew.sh/)
-
-  ```bash
-  brew install dep
-  brew upgrade dep
-  ```
-
-* **Linux**
-* Install dep
-
-  ```bash
-  cd /usr/local/bin/
-  wget https://github.com/golang/dep/releases/download/v0.3.2/dep-linux-amd64
-  ln -s dep-linux-amd64 dep
-  ```
-
-#### Download Dependencies
-
-Switch to the root directory of the project to download dependencies for Go-Nebulas:
-
-```bash
-cd $GOPATH/src/github.com/nebulasio/go-nebulas
-make dep
-```
-
-> `make dep` downloads lots of dependencies. It might take a long time to download for the first time. Some dependencies may fail to download. If you can not download, you can directly download the zipped dependency files generated by dep [vendor.tar.gz](http://develop-center.oss-cn-zhangjiakou.aliyuncs.com/setup/vendor/vendor.tar.gz) and extract it to the nebulas root directory.
->
-> ```bash
-> vendor.tar.gz
-> MD5: fd9bba20b5b8d8e347329bc32feb9d34
-> ```
-
 ### Build NEB
 
 - Set up runtime environment
 ```bash
-cd $GOPATH/src/github.com/nebulasio/go-nebulas
-source install-native-libs.sh
+cd /path/to/workspace/go-nebulas
+source setup.sh
 ```
 - Build NEB
 You can now build the executable for Nebulas:
 
 ```bash
-cd $GOPATH/src/github.com/nebulasio/go-nebulas
+cd /path/to/workspace/go-nebulas
 make build
 ```