client: add dfi alias

- `dfi` is now primary unified command (saves fingers)
  * `docker-finance` is still available, as this is only an addition
- Also fixes missing line continuation during install (#104)

client/docker-finance.d/container/shell/superscript.bash.in

@@ -33,6 +33,7 @@ export PATH="$PATH:${HOME}/.local/bin:${DOCKER_FINANCE_CONTAINER_REPO}:${DOCKER_
 # Base command alias
 alias docker-finance='$DOCKER_FINANCE_CONTAINER_CMD'
 alias finance='$DOCKER_FINANCE_CONTAINER_CMD'
+alias dfi='$DOCKER_FINANCE_CONTAINER_CMD'
 
 # Traditional aliases
 alias c='clear' # or ctrl+l