Added script for new hire PR submission (#471)

Author: Elliot Boschwitz

employee_registry.txt

@@ -0,0 +1 @@
+elbosc was here!                                  2020-04-30

new_hire.py

@@ -0,0 +1,23 @@
+# Designed for new hires to complete their first PR.
+# Writes to 'employee_registry.txt' by calling `python new_hire.py <alias>`
+
+from datetime import date
+import os
+import sys
+import click
+from utility import ROOT_DIR
+
+def register_alias(alias):
+    """
+    Appends text to 'employee_registry.txt'
+    """
+    with open(os.path.join(ROOT_DIR, 'employee_registry.txt'), 'a') as f:
+        f.write('{0} was here!\t{1}\n'.format(alias, date.today()).expandtabs(50))
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        click.secho("`new_hire.py` takes one string as an argument. "
+                    "Please provide your alias surrounded in strings, "
+                    "i.e. \"elbosc\".", err=True)
+    else:
+        register_alias(sys.argv[1])