Update guide

HowToUseNewFeatures.md

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+## How To Use new features
+- Add Generation masternode private key feature
+- Add masternode private key preinputed feature
+
+It means you don't need to configure phore_n*.conf on VPS anymore.
+
+## How To use generation feature
+1. Enter this command
+```bash
+git clone https://github.com/phoreproject/vps.git && cd vps && ./install.sh -p phore -g
+```
+
+2. Wait the script sets up your masternode.
+
+3. Let's start your masternode client. Enter this command
+```
+activate_masternodes_phore
+```
+The masternode daemons will start and begin loading the Phore Blockchain.
+
+4. You need to check masternode.conf in VPS. Enter this command
+```
+cat /tmp/phore_masternode.conf
+```
+
+It will show like this.
+<img src="docs/images/masternode_vps/conf.png" alt="VPS configuration" class="inline"/>
+
+Please copy that and paste it to your masternode.conf in local.
+After this, you need to start from Step 1.
+But You already generate private key, so you can skip step 2.
+
+## How To use preinputed feature
+1. Start From Step 1
+2. After Step 3, Enter this command on VPS
+```bash
+git clone https://github.com/phoreproject/vps.git && cd vps && ./install.sh -p phore --key **GENERATED PRIVATE KEY**
+```
+
+2. Wait the script sets up your masternode.
+
+3. Let's start your masternode client. Enter this command
+```
+activate_masternodes_phore
+```
+The masternode daemons will start and begin loading the Phore Blockchain.
+