Add LICENCE and README

Author: ilevn

LICENCE

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+The MIT License (MIT)
+
+Copyright (c) 2020 Nils T.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# sql-generator
+
+This tool lets you generate postgresql insert statements for common data types.  
+It's pretty minimalistic at the moment but offers support for basic statements 
+and foreign key relations.
+
+In addition to that, `sql-generator` supports custom generators for table columns
+and data types.
+
+## Usage
+
+```python
+from generator import Generator, write_results_to_file
+import psycopg2
+
+# Custom converter for all columns or data types with
+# `custom_a` as name.
+def gen_column_a(column):
+    return f"My data type is {column.data_type}!"
+
+conn = psycopg2.connect("your dsn")
+gen = Generator(conn, custom_converters={"column_a": gen_column_a})
+# Amount of inserts per table.
+amounts = {"table_a": 50, "table_b": 25, "table_c": 100}
+generated_statements: dict = gen.generate_table_data_for_all(amounts)
+# Write generated statements to file.
+# You can optionally truncate your db with `should_truncate=True`.
+write_results_to_file(generated_statements, dest="your_output.sql")
+```

generators.py

@@ -1,3 +1,27 @@
+"""
+The MIT License (MIT)
+
+Copyright (c) 2020 Nils T.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+"""
+
 import random
 import string
 import time