Make master installation clearer
People are asking for 0.4.0+ functionality, so by making the master installation instructions a section, we can easily copy a link pointing to the relevant bit of code.
@@ -29,17 +29,18 @@ Its ambitions are:
## Installation
-To install [the current release](https://pypi.org/project/monai/):
+
+### Installing [the current release](https://pypi.org/project/monai/):
```bash
pip install monai
```
-To install from the source code repository:
+### Installing the master branch from the source code repository:
```bash
pip install git+https://github.com/Project-MONAI/MONAI#egg=MONAI
```
-Alternatively, pre-built Docker image is available via [DockerHub](https://hub.docker.com/r/projectmonai/monai):
+### Using the pre-built Docker image [DockerHub](https://hub.docker.com/r/projectmonai/monai):
```bash
# with docker v19.03+
docker run --gpus all --rm -ti --ipc=host projectmonai/monai:latest
