diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cffed5f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,13 @@
+# V Documentation Server
+
+Synopsis:
+
+```
+generate and serve HTML documentation for V module
+
+usage: vdocs [-l addr:port] [<dir>]
+
+options:
+  -help       print this help message and exit
+  -l, -listen listen address, 127.0.0.1:4000 by default
+```
diff --git a/UNLICENSE b/UNLICENSE
new file mode 100644
index 0000000..c91541e
--- /dev/null
+++ b/UNLICENSE
@@ -0,0 +1,22 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
+software, either in source code form or as a compiled binary, for any purpose,
+commercial or non-commercial, and by any means.
+
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and to
+the detriment of our heirs and
+successors. We intend this dedication to be an overt act of relinquishment in
+perpetuity of all present and future rights to this software under copyright
+law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>
diff --git a/v.mod b/v.mod
index 0bc8749..adc1472 100644
--- a/v.mod
+++ b/v.mod
@@ -1,7 +1,7 @@
 Module {
-	name: 'vdocserve'
-	description: 'Generate and serve module documentation'
+	name: 'vdocs'
+	description: 'Generate and serve V module documentation'
 	version: '0.1.0'
-	license: 'MIT'
+	license: 'Unlicense'
 	dependencies: []
 }
diff --git a/vdocs.v b/vdocs.v
new file mode 100644
index 0000000..89ab636
--- /dev/null
+++ b/vdocs.v
@@ -0,0 +1,60 @@
+module main
+
+import flag
+import log
+import net.http.file
+import os
+import rand
+import v.vmod
+
+struct FlagConfig {
+mut:
+	help   bool
+	listen string = '127.0.0.1:4000' @[short: l]
+	dir    string @[ignore]
+}
+
+fn main() {
+	mut flags, no_matches := flag.to_struct[FlagConfig](os.args, skip: 1, style: .go_flag) or {
+		eprintln('cmdline parsing error, see -help for info')
+		exit(2)
+	}
+	if no_matches.len == 0 {
+		flags.dir = '.'
+	} else if no_matches.len == 1 {
+		flags.dir = no_matches[0]
+	} else {
+		eprintln('unrecognized arguments: ${no_matches[1..]}')
+		exit(2)
+	}
+	if flags.help {
+		println('generate and serve HTML documentation for V module')
+		println('')
+		println('usage: vdocs [-l addr:port] [<dir>]')
+		println('')
+		println('options:')
+		println('  -help       print this help message and exit')
+		println('  -l, -listen listen address, 127.0.0.1:4000 by default')
+		exit(0)
+	}
+	mut cache := vmod.get_cache()
+	modfile := cache.get_by_folder(os.getwd())
+	modname := vmod.from_file(modfile.vmod_file)!.name
+	tmp_dir := os.join_path(os.temp_dir(), os.geteuid().str(), modname + '_docs_' + rand.u32().hex())
+	log.info('generate HTML docs...')
+	os.mkdir_all(tmp_dir, mode: 0o755)!
+	os.execute_or_exit('v doc -f html -o ${tmp_dir} -m ${flags.dir} ')
+	signal_callback := fn [tmp_dir] (_ os.Signal) {
+		eprintln('\rCleanup...')
+		os.rmdir_all(tmp_dir) or {
+			log.error('unable to delete temporary dir ${tmp_dir}')
+			exit(1)
+		}
+		exit(0)
+	}
+	os.signal_opt(.int, signal_callback)!
+	os.signal_opt(.term, signal_callback)!
+	log.info('docs stored in temporary dir ${tmp_dir}')
+	log.info('use ^C to quit server')
+	file.serve(folder: tmp_dir, index_file: modname + '.html', on: flags.listen)
+}
diff --git a/vdocserve.v b/vdocserve.v
deleted file mode 100644
index a4e0578..0000000
--- a/vdocserve.v
+++ /dev/null
@@ -1,42 +0,0 @@
-module main
-
-import flag
-import log
-import net.http.file
-import os
-import rand
-import v.vmod
-
-fn main() {
-	mut fp := flag.new_flag_parser(os.args)
-	fp.application('vdocserve')
-	fp.description('generate and serve V module HTML documentation')
-	fp.version('0.1.0')
-	fp.skip_executable()
-	fp.limit_free_args(0, 2)!
-	listen := fp.string('listen', u8(`l`), '127.0.0.1:4000', 'HTTP server listen address:port')
-	fp.finalize() or {
-		eprintln(err)
-		println(fp.usage())
-		exit(1)
-	}
-	mut cache := vmod.get_cache()
-	modfile := cache.get_by_folder(os.getwd())
-	modname := vmod.from_file(modfile.vmod_file)!.name
-	docs_dir := os.join_path(os.temp_dir(), os.geteuid().str(), modname + '_docs_' +
-		rand.u16().hex())
-	log.info('generating HTML docs in temporary dir ${docs_dir}')
-	os.mkdir_all(docs_dir, mode: 0o755)!
-	os.execute_or_exit('v doc -f html -o ${docs_dir} -m . ')
-	sigint_callback := fn [docs_dir] (_ os.Signal) {
-		os.rmdir_all(docs_dir) or {
-			log.error('unable to delete temporary dir ${docs_dir}')
-			exit(1)
-		}
-		eprintln('cleanup temporary data')
-		exit(0)
-	}
-	os.signal_opt(.int, sigint_callback)!
-	log.info('starting docs server, use ^C to quit')
-	file.serve(folder: docs_dir, index_file: modname + '.html', on: listen)
-}