Refactor all project READMEs

sp/README.md

@@ -0,0 +1,35 @@
+# sp
+
+This is the project home of `sp` the *selfpass* CLI.
+
+To install with Go run `go get -u github.com/mitchell/selfpass/sp`.
+
+Help menu:
+```
+This is the CLI client for Selfpass, the self-hosted password manager. With this tool you
+can interact with the entire Selfpass API.
+
+Usage:
+  sp [command]
+
+Available Commands:
+  create      Create a credential in Selfpass
+  decrypt     Decrypt a file using your masterpass and secret key
+  decrypt-cfg Decrypt your config file
+  delete      Delete a credential using the given ID
+  encrypt     Encrypt a file using your masterpass and secret key
+  get         Get a credential info and copy password to clipboard
+  help        Help about any command
+  init        This command initializes SPC for the first time
+  list        List the metadata for all credentials
+  update      Update a credential in Selfpass
+
+Flags:
+      --config string   config file (default is $HOME/.sp.toml)
+  -h, --help            help for sp
+      --version         version for sp
+
+Use "sp [command] --help" for more information about a command.
+```
+
+For more project-level information see the root `README.md`.