Merge pull request 'Aufgabe 1 Codewars' (#2) from aufgabe1 into master

Reviewed-on: #2

src/codewars/snail.py

@@ -0,0 +1,18 @@
+def snail(array):
+    result = []
+
+    while array:
+        result += array.pop(0)
+
+        if array and array[0]:
+            for row in array:
+                result.append(row.pop())
+
+        if array:
+            result += array.pop()[::-1]
+
+        if array and array[0]:
+            for row in reversed(array):
+                result.append(row.pop(0))
+
+    return result