Add a function

Starting work on #8

function.sh

@@ -0,0 +1,30 @@
+function _ally::reload() {
+    # Reload the current terminal session
+    source ~/.ally
+}
+# TODO: The function can take in arguments, so we need to fix the "unalias" part 
+#       to unalias the correct alias, rather than some flag
+function _ally::unalias() {
+    # Parse the args
+    # Call ally, then unalias $1 and source ~/.ally
+    ally $@
+    # Get the part that is not a flag
+    for arg in $@; do
+        if [[ $arg != -* ]]; then
+            if [[ $arg == $1 ]]; then
+                continue
+            fi
+            unalias $arg
+            break
+        fi
+    done
+    _ally::reload
+}
+function ally_function() {
+    # Call the ally cli tool with all args
+    if [ "$1" = "remove" ]; then
+        _ally::unalias $@
+    else
+        ally $@
+    fi
+}