The Lumberjack [1.8]

Now, to cut down the tree (along with the leaves) it will be enough to break just one block with an ax.

How to install The Lumberjack Mod:
1. Download and install Minecraft Forge
2. Download mod
3. Without unpacking, copy it to C:\Users\
USER_NAME\AppData\Roaming\.minecraft\mods
4. Done