README update

Author: dmythro

README.md

@@ -1,4 +1,41 @@
-Countries
-=========
+# Countries
 
-Lists of Continents & Countries (with languages, capital and currency, native name, calling codes).
+Continents & countries: ISO 3166-1 alpha-2 code, name, languages, capital and currency, native name, calling codes. Lists are available in JSON and SQL formats.
+
+```
+{
+    "continents": {
+        "AF": "Africa",
+        "AN": "Antarctica",
+        "AS": "Asia",
+        "EU": "Europe",
+        "NA": "North America",
+        "OC": "Oceania",
+        "SA": "South America"
+    },
+    "countries": {
+        "AD": {
+            "name": "Andorra",
+            "native": "Andorra",
+            "phone": "376",
+            "continent": "EU",
+            "capital": "EUR",
+            "currency": "And",
+            "languages": "ca"
+        },
+        ...
+    }
+}
+```
+
+Also, there's a minimal JSON file with only country by code object:
+
+```
+{
+  ...
+  "UA":"Ukraine",
+  ...
+  "US":"United States"
+  ...
+}
+```