Makefile and output for make

Makefile:

```
# Makefile for Writing Make Files Example

# *****************************************************
# Variables to control Makefile operation

# the compiler: gcc for C program, define as g++ for C++
CC = g++

# compiler flags:
#  -g     - this flag adds debugging information to the executable file
#  -Wall  - this flag is used to turn on most compiler warnings
CFLAGS = -Wall -g -std=c++14

# ****************************************************
# Targets needed to bring the executable up to date

# The build target
TARGET = AccountTest
OUT = app

main: $(TARGET).o
	$(CC) $(CFLAGS) -o $(OUT) $(TARGET).o

# The main.o target can be written more simply

$(TARGET).o: $(TARGET).cpp
	$(CC) $(CFLAGS) -c $(TARGET).cpp

clean:
	$(RM) $(OUT) $(TARGET).o

```

Output for make:
```
$ make
g++ -Wall -g -std=c++14 -c AccountTest.cpp
g++ -Wall -g -std=c++14 -o app AccountTest.o
$
```