update install

added hush.conf and dl of proving key

INSTALL.md

@@ -1,10 +1,27 @@
 
 # Installing Hush 
 
+## Install 
+
     sudo echo 'deb https://dl.bintray.com/myhush/hush/ hush main' >> /etc/apt/sources.list
     apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61 
     sudo apt-get update
     sudo apt-get install hush
+    
+## Create a HUSH configuration file (*important*):
+```
+mkdir -p ~/.hush
+echo "rpcuser=username" >> ~/.hush/hush.conf
+echo "rpcpassword=`head -c 32 /dev/urandom | base64`" >>~/.hush/hush.conf
+echo "addnode=myhush.network" >> ~/.hush/hush.conf
+echo "addnode=us.madmining.club" >> ~/.hush/hush.conf
+echo "addnode=zdash.suprnova.cc" >> ~/.hush/hush.conf
+```
+
+## Download proving key
+```
+hush-fetch-params
+```
 
 # Building Hush from source