Update 'readme.md'

readme.md

 # Installing Elixir in Ubuntu
-#### Tested for Ububtu 20.04
+###### Tested for Ububtu 20.04
+
+
+### Step 1: Install Dependencies
+
+#### 1a: Install Node
+```
+sudo apt update
+```
+```
+sudo apt upgrade
+```
+```
+sudo apt install nodejs
+```
+```
+node -v
+```
+```
+sudo apt install npm
+```
 
-
-Step 1: Install Dependencies
-
-1a: Install Node
 1b: Install Git
 1c: Clone elxr
 
-Step 2: elxr pull
+### Step 2: elxr pull
 
-Step 3: Switch branch
+### Step 3: Switch branch
 elxr use elixir
 
-Step 4: SyncMaster (only for production)
+### Step 4: SyncMaster (only for production)
 
-Step 5: Pull all instances
+### Step 5: Pull all instances
 elxr npm i