Added __init__ and modules.py

Author: OmkarPathak

pygorithm/string/__init__.py

@@ -0,0 +1,15 @@
+"""
+Collection of string methods and functions
+"""
+from . import anagram
+from . import pangram
+from . import isogram
+from . import modules
+from . import palindrome
+
+__all__ = [
+    'anagram',
+    'pangram',
+    'isogram',
+    'palindrome'
+]

pygorithm/string/modules.py

@@ -0,0 +1,15 @@
+import pkgutil
+
+
+def modules():
+    """
+    Find all functions in pygorithm.string
+    """
+    import pygorithm.string
+    package = pygorithm.string
+    modules = []
+    for importer, modname, ispkg in pkgutil.iter_modules(package.__path__):
+        modules.append(modname)
+    modules.remove('modules')
+    modules.sort()
+    return modules