Cut the v0.1.5 release.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "ucg"
-version     = "0.1.4"
+version     = "0.1.5"
 authors     = ["Jeremy Wall <jeremy@marzhillstudios.com>"]
 description = "A configuration generation grammar."
 repository  = "https://github.com/zaphar/ucg"

README.md

@@ -42,6 +42,27 @@ SUBCOMMANDS:
     validate    Check a specific ucg file for errors.
 ```
 
+## compiling a file
+
+```sh
+Compile a specific ucg file.
+
+USAGE:
+    ucg build [OPTIONS] <INPUT> --sym <sym> --target <target>
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+
+OPTIONS:
+    -o, --out <out>          Output file to write to.
+        --sym <sym>          Specify a specific let binding in the ucg file to output.
+    -t, --target <target>    Target output type. (flags, json, env, exec)
+
+ARGS:
+    <INPUT>    Input ucg file to build.
+```
+
 ## Language Reference
 
 https://docs.rs/ucg/

src/main.rs

@@ -36,7 +36,7 @@ fn do_flags<'a>() -> clap::ArgMatches<'a> {
             (@subcommand build =>
              (about: "Compile a specific ucg file.")
              (@arg sym: --sym +takes_value +required "Specify a specific let binding in the ucg file to output.")
-             (@arg target: --target -t +required +takes_value "Target output type. (flags, json, env)")
+             (@arg target: --target -t +required +takes_value "Target output type. (flags, json, env, exec)")
              (@arg out: --out -o +takes_value "Output file to write to.")
              (@arg INPUT: +required "Input ucg file to build.")
             )