initial version, tested locally with my API key

README.md

@@ -1,2 +1,42 @@
 # perl6-holidayapi
 Official Perl 6 library for Holiday API
+
+## Installation
+
+Required module
+
+``` perl6
+$ zef install HTTP::UserAgent
+```
+
+## Usage
+
+Retrieve holidays for a single year and country (result is a single
+JSON file):
+
+
+```perl6
+use HTTP::UserAgent
+
+my $ua = HTTP::UserAgent.new;
+$ua.timeout = 10;
+
+my $HOLAPI-KEY    = 'my-key';
+my $data-location = 'https://holidayapi.com/v1/holidays';
+my $options       = '&pretty';
+my $year      = 2017;
+my $country   = 'US';
+my $json-data = "holiday-data-{$country}-{$year}.json";
+
+my $query    = "key={$HOLAPI-KEY}{$options}&country={$country}&year={$year}";
+my $api-uri  = "{$data-location}?{$query}";
+my $response = $ua.get($api-uri);
+if $response.is-success {
+	say "Working year '$year'...";
+    spurt $json-data, $response.content;
+    say "See JSON data file '$json-data'.";
+}
+else {
+	die $response.status-line;
+}
+```