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cmds/coredhcp-generator/README.md

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+## CoreDHCP Generator
+
+`coredhcp-generator` is a tool used to build CoreDHCP with the plugins you want.
+
+Why is it even needed? Go is a compiled language with no dynamic loading
+support. In order to load a plugin, it has to be compiled in. We are happy to
+provide a standard [main.go](/cmds/coredhcp/main.go), and at the same time we
+don't want to include plugins that not everyone would use, otherwise the binary
+size would grow without control.
+
+You can use `coredhcp-generator` to generate a `main.go` that includes all the
+plugins you wish. Just use it as follows:
+
+```
+$ ./coredhcp-generator --from core-plugins.txt
+2019/11/21 23:32:04 Generating output file '/tmp/coredhcp547019106/coredhcp.go' with 7 plugin(s):
+2019/11/21 23:32:04   1) github.com/coredhcp/coredhcp/plugins/file
+2019/11/21 23:32:04   2) github.com/coredhcp/coredhcp/plugins/lease_time
+2019/11/21 23:32:04   3) github.com/coredhcp/coredhcp/plugins/netmask
+2019/11/21 23:32:04   4) github.com/coredhcp/coredhcp/plugins/range
+2019/11/21 23:32:04   5) github.com/coredhcp/coredhcp/plugins/router
+2019/11/21 23:32:04   6) github.com/coredhcp/coredhcp/plugins/server_id
+2019/11/21 23:32:04   7) github.com/coredhcp/coredhcp/plugins/dns
+2019/11/21 23:32:04 Generated file '/tmp/coredhcp547019106/coredhcp.go'. You can build it by running 'go build' in the output directory.
+```
+
+You can also specify the plugin list on the command line, or mix it with
+`--from`:
+```
+$ ./coredhcp-generator --from core-plugins.txt \
+    github.com/coredhcp/plugins/redis
+```
+
+Notice that it created a file called `coredhcp.go` in a temporary directory. You
+can now `go build` that file and have your own custom CoreDHCP.
+
+## Bugs
+
+CoreDHCP uses Go versioned modules. The generated file does not do that yet. We
+will add this feature soon.