freshen README, point to 3rd party packages for intall

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@ -49,32 +49,54 @@ files (containing compiled descriptors, produced by `protoc`) to `grpcurl`.
Download the binary from the [releases](https://github.com/fullstorydev/grpcurl/releases) page.
### Homebrew (macOS)
On macOS, `grpcurl` is available via Homebrew:
```shell
brew install grpcurl
```
### Docker
For platforms that support Docker, you can download an image that lets you run `grpcurl`:
```shell
# Download image
docker pull fullstorydev/grpcurl:latest
# Run the tool
docker run fullstorydev/grpcurl api.grpc.me:443 list
```
### Other Packages
There are numerous other ways to install `grpcurl`, thanks to support from third parties that
have created recipes/packages for it. These include other ways to install `grpcurl` on a variety
of environments, including Windows and myriad Linux distributions.
You can see more details and the full list of other packages for `grpcurl` at _repology.org_:
https://repology.org/project/grpcurl/information
### From Source
You can use the `go` tool to install `grpcurl`:
If you already have the [Go SDK](https://golang.org/doc/install) installed, you can use the `go`
tool to install `grpcurl`:
```shell
go get github.com/fullstorydev/grpcurl/...
go install github.com/fullstorydev/grpcurl/cmd/grpcurl
```
This installs the command into the `bin` sub-folder of wherever your `$GOPATH`
environment variable points. If this directory is already in your `$PATH`, then
you should be good to go.
environment variable points. (If you have no `GOPATH` environment variable set,
the default install location is `$HOME/go/bin`). If this directory is already in
your `$PATH`, then you should be good to go.
If you have already pulled down this repo to a location that is not in your
`$GOPATH` and want to build from the sources, you can `cd` into the repo and then
run `make install`.
If you encounter compile errors, you could have out-dated versions of `grpcurl`'s
dependencies. You can update the dependencies by running `make updatedeps`. You can
also use [`vgo`](https://github.com/golang/vgo) to install, which will use the right
versions of dependencies. Or, if you are using Go 1.11, you can add `GO111MODULE=on`
as a prefix to the commands above, which will also build using the right versions of
dependencies (vs. whatever you may already in your `GOPATH`).
If you encounter compile errors and are using a version of the Go SDK older than 1.13,
you could have out-dated versions of `grpcurl`'s dependencies. You can update the
dependencies by running `make updatedeps`. Or, if you are using Go 1.11 or 1.12, you
can add `GO111MODULE=on` as a prefix to the commands above, which will also build using
the right versions of dependencies (vs. whatever you may already have in your `GOPATH`).
## Usage
The usage doc for the tool explains the numerous options: