Added example for function composition

composition.py

@@ -0,0 +1,22 @@
+from fabric.api import run, local
+
+def run_tests():
+    local("echo running tests")
+    # local("false")
+
+
+def push_code():
+    local("echo pushing code")
+
+
+def pull_code():
+    run("echo pulling code")
+
+
+def restart_webserver():
+    run("echo restaring webserver")
+
+
+def deploy_code_to_servers():
+    pull_code()
+    restart_webserver()