The great refactor (#82)

source/plugins/habits/README.md

@@ -0,0 +1,38 @@
+### 💡 Coding habits
+
+The coding *habits* plugin display metrics based on your recent activity, such as active hours or languages recently used.
+
+<table>
+  <td align="center">
+    <img src="https://github.com/lowlighter/lowlighter/blob/master/metrics.plugin.habits.facts.svg">
+    <details open><summary>Charts version</summary>
+      <img src="https://github.com/lowlighter/lowlighter/blob/master/metrics.plugin.habits.charts.svg">
+    </details>
+    <img width="900" height="1" alt="">
+  </td>
+</table>
+
+Using more events will improve accuracy of these metrics, although it'll increase the number of GitHub requests used.
+
+Active hours and days are computed through your commit history, while indent style is deduced from your recent diffs.
+Recent languages activity is also computed from your recent diffs, using [github/linguist](https://github.com/github/linguist).
+
+Use a full `repo` scope token to access **private** events.
+
+By default, dates use Greenwich meridian (GMT/UTC). Be sure to set your timezone (see [here](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) for a list of supported timezones) for accurate metrics.
+
+#### ℹ️ Examples workflows
+
+[➡️ Available options for this plugin](metadata.yml)
+
+```yaml
+- uses: lowlighter/metrics@latest
+  with:
+    # ... other options
+    plugin_habits: yes
+    plugin_habits_from: 200       # Use 200 events to compute habits
+    plugin_habits_days: 14        # Keep only events from last 14 days
+    plugin_habits_facts: yes      # Display facts section
+    plugin_habits_charts: yes     # Display charts section
+    config_timezone: Europe/Paris # Set timezone
+```