Fix 'code' in readme
diff --git a/README.md b/README.md
index f2d6c1d..a006b27 100644
--- a/README.md
+++ b/README.md
@@ -4,28 +4,40 @@
 Install
 =======
 
-    apt-get install python-virtualenv python-pip build-essential python-dev libssl-dev
-    pip install git+https://github.com/dis-xcom/reclass-tools
+```
+apt-get install python-virtualenv python-pip build-essential python-dev libssl-dev
+pip install git+https://github.com/dis-xcom/reclass-tools
+```
 
 Usage
 =====
 
-    This tool can be used to create a new class 'environment' generated from custom inventory.
+This tool can be used to create a new class 'environment' generated from custom inventory.
 
-    # See all the nodes available from reclass inventory (including generated nodes):
-    reclass-tools list-nodes
+See all the nodes available from reclass inventory (including generated nodes):
+```
+reclass-tools list-nodes
+```
 
-    # See only VCP nodes for specific domain:
-    reclass-tools list-nodes -d mcp11-ovs-dpdk.local --vcp-only
+See only VCP nodes for specific domain:
+```
+reclass-tools list-nodes -d mcp11-ovs-dpdk.local --vcp-only
+```
 
-    # See only non-VCP nodes for specific domain (baremetal nodes):
-    reclass-tools list-nodes -d mcp11-ovs-dpdk.local --non-vcp-only
+See only non-VCP nodes for specific domain (baremetal nodes):
+```
+reclass-tools list-nodes -d mcp11-ovs-dpdk.local --non-vcp-only
+```
 
-    # Find specific key in the path (without reclass render):
-    reclass-tools get-key parameters._param.cluster_domain /srv/salt/reclass/classes/cluster/physical_mcp11_ovs_dpdk/
+Find specific key in the path (without reclass render):
+```
+reclass-tools get-key parameters._param.cluster_domain /srv/salt/reclass/classes/cluster/physical_mcp11_ovs_dpdk/
+```
 
-    # Collect all parameters._param into a single dict, to track _param changes from commit to commit:
-    reclass-tools list-params /srv/salt/reclass/classes/
+Collect all parameters._param into a single dict, to track _param changes from commit to commit:
+```
+reclass-tools list-params /srv/salt/reclass/classes/
+```
 
 Requirements
 ------------
@@ -50,31 +62,43 @@
 1. Create a context file with nodes list and 'linux.network.interface' configuration
 from the current reclass inventory.
 
-    reclass-tools show-context -d mcp11-ovs-dpdk.local parameters.linux.network.interface > /tmp/context-mcp11-ovs-dpdk.local.yaml
+```
+reclass-tools show-context -d mcp11-ovs-dpdk.local parameters.linux.network.interface > /tmp/context-mcp11-ovs-dpdk.local.yaml
+```
 
 2. Remove existing hardware-related 'linux.network.interface' object from 'cluster', 'system' and 'service' classes.
 WARNING! Make sure that you have created the context file with 'linux.network.interface' as a backup.
 
-    reclass-tools del-key parameters.linux.network.interface /srv/salt/reclass/classes/cluster/physical_mcp11_ovs_dpdk
-    reclass-tools del-key parameters.linux.network.interface /srv/salt/reclass/classes/system/
-    reclass-tools del-key parameters.linux.network.interface /usr/share/salt-formulas/reclass/
+```
+reclass-tools del-key parameters.linux.network.interface /srv/salt/reclass/classes/cluster/physical_mcp11_ovs_dpdk
+reclass-tools del-key parameters.linux.network.interface /srv/salt/reclass/classes/system/
+reclass-tools del-key parameters.linux.network.interface /usr/share/salt-formulas/reclass/
+```
 
 3. Render the 'environment' class using example template based on cookiecutter:
 
-    git clone https://github.com/dis-xcom/reclass_tools ~/reclass_tools
-    reclass-tools render -t ~/reclass_tools/examples/environment -o /tmp/environment -c /tmp/context-mcp11-ovs-dpdk.local.yaml  # You can add multiple YAMLs here
+```
+git clone https://github.com/dis-xcom/reclass_tools ~/reclass_tools
+reclass-tools render -t ~/reclass_tools/examples/environment -o /tmp/environment -c /tmp/context-mcp11-ovs-dpdk.local.yaml  # You can add multiple YAMLs here
+```
 
 4. Check that the 'environment' has been created
 
-    tree /tmp/environment/
+```
+tree /tmp/environment/
+```
 
 5. Symlink 'environment' to the /srv/salt/reclass/classes
 
-    ln -s /tmp/environment /srv/reclass/salt/classes
+```
+ln -s /tmp/environment /srv/reclass/salt/classes
+```
 
 6. Add new class '- environment.mcp11-ovs-dpdk.local' to the classes/cluster/<cluster_model>/infra/config.yml
 (edit the file manually for now)
 
 7. Update the nodes for reclass inventory
 
-    salt-call state.sls reclass.storage
+```
+salt-call state.sls reclass.storage
+```
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