message: Flesh out README for SEGS dbtool
  Add information about dbtool's prerequisites and operating instructions.
diff: +SEGS DBTOOL v0.3
  +======
  +
  A tool used to manage the account and character databases.
  +
  +PREREQUISITES
  +------
  +
  +**1. Ensure `dbtool` is located in the correct directory.**
  +
  +SEGS `dbtool` must be run from the SEGS output folder, where the `default_dbs` directory resides. This ensures that all relative pathing used in the code will execute correctly. The output directory should be located somewhere similar to:
  +
  +```
  +PATH/TO/SEGS/INSTALL/build-PROJECT_NAME-Desktop_Qt_YOUR_QT_VERSION_MinGW_32bit-Debug/out
  +```
  +
  +If `dbtool` is not run from this directory, you will receive an error.
  +
  +_**// ADDITIONAL PREREQUISITES GO HERE //**_
  +
  +INSTRUCTIONS
  +------
  +
  +**1. Navigate to the SEGS output directory using a command prompt.**
  +
  +Open a command prompt terminal. Using the `cd` command, change the working directory to the SEGS output folder, given above under "Prerequisites."
  +
  +**2. Run `dbtool`.**
  +
  +Run `dbtool` by typing the following command and pressing ENTER:
  +
  +```
  +dbtool
  +```
  +
  +Yes, it's that simple. If the `segs` and `segs_game` binary databases already exist in the SEGS output directory, you will need to add the optional `force` argument to the command in order to overwrite the existing databases:
  +
  +```
  +dbtool -f
  +```
  +
  +If the operation was successful, you should see two `COMPLETED` messages in the command prompt. In addition, the `segs` and `segs_game` binary databases should contain an updated "last modified" date.
  +
  +_**// ADDITIONAL INFORMATION GOES HERE //**_
  