feat: create methods to interact with DetaBase

.gitignore

@@ -4,4 +4,5 @@
 .dart_tool/
 .packages
 build/
-pubspec.lock
+pubspec.lock
+coverage/

README.md

@@ -1,11 +1,149 @@
-# deta
+# Deta
 
-[![style: very good analysis][very_good_analysis_badge]][very_good_analysis_link]
-[![License: MIT][license_badge]][license_link]
+[![style: very good analysis][very_good_analysis_badge]][very_good_analysis_link]   [![License: MIT][license_badge]][license_link]  [![coverage][coverage_badge]][ci_link]
 
-A Very Good Project created by Very Good CLI.
+---
 
+A Dart package to interact with the [HTTP API](https://docs.deta.sh/) of the free services of the [Deta](https://deta.sh/) plataform.
+
+## Getting Started
+
+Check the full example [here](https://github.com/yeikel16/deta-dart/blob/main/example/deta_base_example.dart).
+
+### Install
+
+Add to dependencies on `pubspec.yaml`:
+
+```yaml
+dependencies:
+    deta:
+        git:
+            url: https://github.com/yeikel16/deta-dart.git
+```
+
+### Usege
+
+We declare class **Deta**, which receives our private credential as a parameter.
+
+```dart
+  final deta = Deta(projectKey: 'projectKey', dio: Dio());
+```
+
+🚨  **WARNING** 🚨
+Your `projectKey` is confidential and meant to be used by you. Anyone who has your project key can access your database. Please, do not share it or commit it in your code.
+
+### DetaBase
+
+`DetaBase` is a fully-managed, fast, scalable and secure NoSQL database with a focus on end-user simplicity.
+
+We define our `DetaBase`, with witch we are going to interact through the `base` method that receives the name of the `DetaBase` as a parameter. In case not exist it will be created instantly on first use, you can create as many `DetaBase` as you need.
+
+A `DetaBase` instance is a collection of data, not unlike a Key-Value store, a MongoDB collection or a PostgreSQL/MySQL table.
+
+```dart
+  final detabase = deta.base('lenguages');
+```
+
+#### Methods
+
+##### put
+
+Save an item. It will update an item if the key already exists.
+
+```dart  
+  await detabase.put({
+    'key': 'dart-g',
+    'name': 'Dart',
+    'description':
+        'Dart is a general-purpose programming language that adds strong '
+            'support for modularity, co-variant return types, and a strong '
+            'emphasis on type safety.',
+    'creator': 'Google',
+    'year': 2012,
+  });
+```
+
+##### putMany
+
+Saves a list the elements, this list can only have a maximum of 20 element.
+
+```dart
+  await detabase.putMany(
+    items: lenguages.map((lenguage) => lenguage.toJson()).toList(),
+  );
+```
+
+##### insert
+
+Saves an element like `put`, with the difference that if this element exists in `DetaBase` it will throw an `DetaObjectException`. The `key` required that are part of the elemet to be saved.
+
+```dart
+  await detabase.insert({
+    'key': 'r-f',
+    'name': 'R',
+    'description': 'R is a programming language and software environment '
+        'for statistical computing and graphics.',
+    'creator': 'R Foundation',
+    'year': 1995,
+  });
+```
+
+##### update
+
+Update the element from the supplied `key`, you have to pass the whole element, both the updated and unchanged parameters.
+
+```dart
+  await detabase.update(
+    key: 'ruby-ym',
+    item: <String, dynamic>{
+      'key': 'ruby-ym',
+      'name': 'Ruby',
+      'description': 'Ruby is a dynamic, open source, general-purpose '
+          'programming language with a focus on simplicity and productivity.',
+      'creator': 'Yukihiro Matsumoto',
+      'year': 1995,
+    },
+  );
+```
+
+##### get
+
+Get a spesific element form the key.
+
+```dart
+  final item = await detabase.get('dart-g');
+```
+
+##### delete
+
+Delete a spesific element from the key.
+
+```dart
+  final wasDeleted = await detabase.delete('ruby');
+```
+
+##### fetch
+
+Return all saved items if no `query` is specified.
+
+```dart
+  final all = await detabase.fetch();
+```
+
+Return all element that matched the indicated `query`.
+
+  ```dart
+  final result = await detabase.fetch(
+    query: [DetaQuery('year').lessThanOrEqualTo(2000).and('name').prefix('C')],
+  );
+  ```
+
+A Very Good Project created by [Very Good CLI](https://github.com/VeryGoodOpenSource/very_good_cli).
+
+[ci_link]: https://github.com/VeryGoodOpenSource/very_good_cli/actions
+[coverage_badge]: https://raw.githubusercontent.com/VeryGoodOpenSource/very_good_cli/main/coverage_badge.svg
 [license_badge]: https://img.shields.io/badge/license-MIT-blue.svg
 [license_link]: https://opensource.org/licenses/MIT
+[logo]: https://docs.deta.sh/img/logo.svg
 [very_good_analysis_badge]: https://img.shields.io/badge/style-very_good_analysis-B22C89.svg
-[very_good_analysis_link]: https://pub.dev/packages/very_good_analysis
+[very_good_analysis_link]: https://pub.dev/packages/very_good_analysis