Merge branch '5-init-config-file' into 'master'

Resolve "Init config file"

Closes #5

See merge request froggit/mygr!4

.gitignore

+.mygr_config

mygr.sh

 #! /bin/bash
 
-echo "My GitLab Runner"
+# Constant
+readonly CONFIG_FILE='.mygr_config'
+
+load_config() {
+  if [[ ! -e ${CONFIG_FILE} ]]; then
+    create_config
+  fi
+}
+
+create_config(){
+  echo "There is no file!"
+  touch ${CONFIG_FILE}
+  echo "The file ${CONFIG_FILE} was created."
+  echo "Please add the line below on your .gitignore"
+  echo "${CONFIG_FILE}"
+}
+
+main() {
+  echo "My GitLab Runner"
+  load_config
+}
+
+main "$@"