add first Crystal snipplet

README.md

@@ -1,6 +1,7 @@
 * [HTML](~/HTML/)
 * [CSS](~/CSS/)
 * [HTTP](~/HTTP/)
+* [Crystal](~/Crystal/)
 * [PHP](~/PHP/)
 * [JavaScript](~/JavaScript/)
 * [nginx](~/nginx/)

~/Crystal/README.md

@@ -0,0 +1,4 @@
+# Crystal
+
+## std
+- [Значение из Regex::MatchData](value_from_match.cr) - Получить значение из `Regex::MatchData("Happy")`

~/Crystal/value_from_match.cr

@@ -0,0 +1,8 @@
+test_string_1 = "rw------- (0o600)"
+# test_string_2 = "rwx------ (0o700)"
+
+if /\d{3}/.match(test_string_1).try &.[0] != "600"
+  puts "Password file permissions is not RW for you.".colorize(:red)
+
+  exit(0)
+end