Add hello function

project/functions/hello.bash

@@ -0,0 +1,19 @@
+  # Functions to deal with greetings
+  #
+  # Written by My_name
+  #
+  # Earth and Life Institute / Université catholique de Louvain (ELIC-UCL)
+  # Created: May 4, 2017
+  # Adapted:
+ 
+  #######################################
+  # Say Hello in English
+  # Globals:
+  # Arguments: 
+  # None
+  # Returns:
+  # None
+  #######################################
+  function say_hello() {
+    echo "Hello world !"
+  }