Update 'readme.md'

readme.md

 #### Tested for Ububtu 20.04
 
 
+Step 1: Install Dependencies
+
+1a: Install Node
+1b: Install Git
+1c: Clone elxr
+
+Step 2: elxr pull
+
+Step 3: Switch branch
+elxr use elixir
+
+Step 4: SyncMaster (only for production)
+
+Step 5: Pull all instances
+elxr npm i
+
+
+
+-----
+
+# Installing Elixir in Windows
+
+
 Step 1: Install Dependencies
 
 1a: Install Node