message: [install] doc improvements
  fix example path
  make steps numbered so it's clear there a sequence of steps
  adjust examples to be more readable - add definition of the expected buffer size
diff: @@ -43,7 +43,7 @@ Use the following command line to build a DNN model (e.g., InceptionV3). See the
  ### Build FlexFlow Runtime with Python Interface (C++ interface is also enabled)
  -* Set the following environment variables. For `CUDNN_HOME`, you should be able to find `cudnn.h` under `CUDNN_HOME/include` and `libcudnn.so` under `CUDNN_HOME/lib` or `CUDNN_HOME/lib64`.
  +1. Set the following environment variables. For `CUDNN_HOME`, you should be able to find `cudnn.h` under `CUDNN_HOME/include` and `libcudnn.so` under `CUDNN_HOME/lib` or `CUDNN_HOME/lib64`.
  ```
  export FF_HOME=/path/to/FlexFlow
  export CUDNN_HOME=/path/to/cudnn
  @@ -60,7 +60,7 @@ export GPU_ARCH=70,86
  If Legion can not automatically detect your Python installation, you need to tell Legion manually by setting the `PYTHON_EXE`, `PYTHON_LIB` and `PYTHON_VERSION_MAJOR`, please refer to the `python/Makefile` for details
  -* Build the flexflow python executable using the following command line
  +2. Build the flexflow python executable using the following command line
  ```
  cd python
  make
  @@ -96,44 +96,46 @@ make
  ```
  # 3. Test the FlexFlow
  -* Set the `FF_HOME` environment variable before running the FlexFlow. You can add the following line in ~/.bashrc.
  +1. Set the `FF_HOME` environment variable before running the FlexFlow. You can add the following line in ~/.bashrc.
  ```
  export FF_HOME=/path/to/FlexFlow
  ```
  -* Run FlexFlow Python examples
  +2. Run FlexFlow Python examples
  The C++ examples are in the [examples/python](https://github.com/flexflow/FlexFlow/tree/master/examples/python).
  For example, the AlexNet can be run as:
  ```
  cd python
  -./flexflow_python example/python/native/alexnet.py -ll:py 1 -ll:gpu 1 -ll:fsize size of gpu buffer -ll:zsize size of zero buffer
  +./flexflow_python examples/python/native/alexnet.py -ll:py 1 -ll:gpu 1 -ll:fsize <size of gpu buffer> -ll:zsize <size of zero buffer>
  ```
  The script of running all the Python examples is `python/test.sh`
  -* Run FlexFlow C++ examples
  +3. Run FlexFlow C++ examples
  The C++ examples are in the [examples/cpp](https://github.com/flexflow/FlexFlow/tree/master/examples/cpp).
  For example, the AlexNet can be run as:
  ```
  -./alexnet -ll:gpu 1 -ll:fsize size of gpu buffer -ll:zsize size of zero buffer
  +./alexnet -ll:gpu 1 -ll:fsize <size of gpu buffer> -ll:zsize <size of zero buffer>
  ```
  +Size of buffers is in MBs, e.g. for an 8GB gpu `-ll:fsize 8000`
  +
  # 4. Install the FlexFlow
  -* Install the FlexFlow binary, header file and library if using CMake.
  +1. Install the FlexFlow binary, header file and library if using CMake.
  ```
  cd build
  make install
  ```
  -* Install the FlexFlow Python interface using pip
  +2. Install the FlexFlow Python interface using pip
  If install from local:
  ```
  cd python
  pip install .
  ```
  -If install from the PyPI repository
  +If installing from the PyPI repository
  ```
  pip install flexflow
  ```
  