Add Readme

Readme.md

+# Text 2 Image
+
+This is a simple API endpoint for generating Images from the provided text. It's special optimized to work with [OpenEPaperLink](https://github.com/jjwbruijn/OpenEPaperLink).
+
+## Example POST Body
+
+```json
+{
+    "text": [
+        {
+            "text": "Hello World",
+            "color": 1 // 0 = white, 1 = black, 2 = red
+        },
+        {
+            "text": "Hello World",
+            "color": 2 // 0 = white, 1 = black, 2 = red
+        }
+    ],
+    "fontSize": 12,
+    "width": 296,
+    "height": 128
+}
+```