Created ide.write (markdown)

ide.write.md

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+### Request
+* **Description**: Overwrites the contents of a file.
+* **Subscribers**: [IdeHandler](https://github.com/avatao-content/baseimage-tutorial-framework/wiki/IdeHandler)
+
+```json
+{
+    "key": "ide.write",
+    "intent": "control",
+    "scope": "zmq"
+}
+```
+
+| Parameter    | Type     | Required           | Description                 |
+| ------------ |:--------:|:------------------:| --------------------------- |
+| *filename* | `string` | :heavy_check_mark: | Full path or basename of a file. |
+| *content* | `string` |  | New contents of the selected file. |
+
+***
+
+**Example**:
+```json
+{
+    "key": "ide.write",
+    "filename": "main.c",
+    "content": "#include <stdio.h>..."
+}
+```
+
+### Response
+* **Description**: Informs the frontend that the file was changed.
+* **Subscribers**: *none*
+
+```json
+{
+    "key": "ide.write",
+    "scope": "websocket"
+}
+```
+
+| Parameter    | Type     | Required           | Description                 |
+| ------------ |:--------:|:------------------:| --------------------------- |
+| *filename* | `string` | :heavy_check_mark: | Full path or basename of a file. |
+| *files* | `array` |  :heavy_check_mark: | List of every readable file according to the current patterns. |
+
+***
+
+**Example**:
+```json
+{
+    "key": "ide.write",
+    "filename": "main.c",
+    "files": ["/home/main.c", "/home/not_main.c"]
+}
+```