Insert default settings into config file after cml installation.

setup.py

 from os import mkdir
 from os.path import expanduser, exists, join
+from configparser import ConfigParser
 from distutils.core import setup
 
 
-USER_HOME_FOLDER = expanduser("~")
-CML_FOLDER_NAME = ".cml"
-DEFAULT_LEARN_DIRECTORY = "data"
+USER_HOME_DIR = expanduser("~")
+CML_DIR_NAME = ".cml"
+DEFAULT_LEARN_DIR = "data"
+CONFIG_FILE_NAME = "settings.ini"
+DEFAULT_TRAINING_SET = "c_iris.csv"
+KNOWLEDGE_DIR = "knowledge"
 
-CML_CONFIG_FOLDER = join(USER_HOME_FOLDER, CML_FOLDER_NAME)
-CML_DEFAULT_LEARN_DIRECTORY = join(CML_CONFIG_FOLDER, DEFAULT_LEARN_DIRECTORY)
+CML_CONFIG_DIR = join(USER_HOME_DIR, CML_DIR_NAME)
+CML_DEFAULT_LEARN_DIR = join(CML_CONFIG_DIR, DEFAULT_LEARN_DIR)
+CONFIG_FILE_PATH = join(CML_CONFIG_DIR, CONFIG_FILE_NAME)
+DEFAULT_TRAINING_SET_PATH = join(CML_DEFAULT_LEARN_DIR, DEFAULT_TRAINING_SET)
+KNOWLEDGE_DIR_PATH = join(CML_CONFIG_DIR, KNOWLEDGE_DIR)
 
 
-def create_cml_config_folder():
-    mkdir(CML_CONFIG_FOLDER)
+def create_cml_config_dir():
+    mkdir(CML_CONFIG_DIR)
 
 
-# TODO (dmt): Insert it!
-def insert_input_file_path_into_settings():
-    pass
+def create_data_dir():
+    mkdir(CML_DEFAULT_LEARN_DIR)
 
 
-# TODO (dmt): Insert it!
-def insert_learn_directory_path_into_settings():
-    pass
+def insert_default_settings_into_config_file():
+    config = ConfigParser()
+    config.read(CONFIG_FILE_PATH)
+    config["GENERAL"]["input_file"] = DEFAULT_TRAINING_SET_PATH
+    config["GENERAL"]["learn_dir"] = CML_DEFAULT_LEARN_DIR
+    config["GENERAL"]["knowledge_dir"] = KNOWLEDGE_DIR_PATH
+    write_configs(config)
 
 
-if not exists(CML_CONFIG_FOLDER):
-    create_cml_config_folder()
+def write_configs(config):
+    with open(CONFIG_FILE_PATH, 'w') as configfile:
+        config.write(configfile)
+
+
+if not exists(CML_CONFIG_DIR):
+    create_cml_config_dir()
 
 
 setup(
     name="cml",
     version="0.1dev",
     packages=["cml", ],
-    data_files=[(CML_CONFIG_FOLDER, ["cml/static/settings.ini"])]
+    data_files=[(CML_CONFIG_DIR, ["cml/static/settings.ini"]),
+                (CML_DEFAULT_LEARN_DIR, ["cml/static/iris.csv"]),
+                (CML_DEFAULT_LEARN_DIR, ["cml/static/c_iris.csv"])]
 )
+
+insert_default_settings_into_config_file()