FIX: Ignore empty __init__.py. Closes #5

Skips all checks on empty __init__.py files.

CHANGES
alxcheck/utils/helpers.py
+ Add is_empty_init_py function helper function for skipping all checks on empty __init__.py.

alxcheck/checks/general.py:
* Fix typo: Remove trailing S in function name check_file_ends_with_new_line.

alxcheck/main.py
+ Print no_ending_new_line error only if new function returns False
* Make Python checks conditional/based on new check's output.

alxcheck/tests/test_general.py

@@ -3,7 +3,7 @@
 from ..checks import (
     check_file_present,
     check_file_not_empty,
-    check_file_ends_with_new_lines,
+    check_file_ends_with_new_line,
 )
 
 
@@ -26,11 +26,11 @@ def test_readme_not_empty_check(self):
     def test_files_with_new_line_check(self):
         f = open("file", "w")
         f.close()
-        self.assertFalse(check_file_ends_with_new_lines("file"))
+        self.assertFalse(check_file_ends_with_new_line("file"))
         f = open("file", "wb")
         f.write(b"line\n\n")
         f.close()
-        self.assertTrue(check_file_ends_with_new_lines("file"))
+        self.assertTrue(check_file_ends_with_new_line("file"))
 
 
 if __name__ == "__main__":