diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 74f237b..617334c 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Python application
+name: pytest
 
 on:
   push:
diff --git a/README.md b/README.md
index 9dc3b7b..75f97e1 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,19 @@
 
 This is an rMQR Code image generator implemented in Python. This is implemented based on [ISO/IEC 23941:2022](https://www.iso.org/standard/77404.html).
 
-## Important Notice
+
+## 📌 Important Notice
 Please verify an image generated by this software whether it can decode correctly before use.
 
-## Basic Usage
+
+## 🚀 Installation
+```
+pip install rmqrcode
+```
+
+
+## 📕 Basic Usage
+### Generate rMQR Code
 ```py
 from rmqrcode import rMQR
 import rmqrcode
@@ -20,11 +29,11 @@ qr = rMQR.fit(
 )
 ```
 
-The `ecc` parameter is an enum value of rmqrcode.ErrorCorrectionLevel to select error correction level. The following values are available:
+The `ecc` parameter is an enum value of `rmqrcode.ErrorCorrectionLevel` to select error correction level. The following values are available:
 - **`ErrorCorrectionLevel.M`**: Approx. 15% Recovery Capacity.
 - **`ErrorCorrectionLevel.H`**: Approx. 30% Recovery Capacity.
 
-The `fit_strategy` parameter is enum value of rmqrcode.FitStrategy to specify how to determine size of rMQR Code. The following values are available:
+The `fit_strategy` parameter is enum value of `rmqrcode.FitStrategy` to specify how to determine size of rMQR Code. The following values are available:
 - **`FitStrategy.MINIMIZE_WIDTH`**: Try to minimize width.
 - **`FitStrategy.MINIMIZE_HEIGHT`**: Try to minimize height.
 - **`FitStrategy.BALANCED`**: Try to keep balance of width and height.
@@ -32,7 +41,17 @@ The `fit_strategy` parameter is enum value of rmqrcode.FitStrategy to specify ho
 Here is an example of images genereated by each fit strategies for data `Test test test`:
 ![Example of fit strategies](https://user-images.githubusercontent.com/14174940/172822478-4f2b5fb8-49bd-464f-b6b2-c7347f71cbf5.png)
 
-## Advanced Usage
+### Save as image
+```py
+from rmqrcode import QRImage
+
+image = QRImage(qr, module_size=8)
+image.show()
+image.save("my_qr.png")
+```
+
+
+## 📚 Advanced Usage
 ### Select rMQR Code size manually
 To select rMQR Code size manually, use `rMQR()` constructor.
 ```py
@@ -40,6 +59,30 @@ qr = rMQR('R11x139', ErrorCorrectionLevel.H)
 qr.make("https://oudon.xyz")
 ```
 
+`R11x139` means 11 rows and 139 columns. The following table shows available combinations.
+						
+| |27|43|59|77|99|139|
+|-|:-:|:-:|:-:|:-:|:-:|:-:|
+|R7|❌|✅|✅|✅|✅|✅|
+|R9|❌|✅|✅|✅|✅|✅|
+|R11|✅|✅|✅|✅|✅|✅|
+|R13|✅|✅|✅|✅|✅|✅|
+|R15|❌|✅|✅|✅|✅|✅|
+|R17|❌|✅|✅|✅|✅|✅|
+
+
+## 🛠️ Under the Hood
+### Encoding modes
+
+The rMQR Code has the four encoding modes Numeric, Alphanumeric, Byte and Kanji to convert data efficiently. However, this package supoprts only Byte mode currently.
+
+|Mode|Supported?|
+|-|:-:|
+|Numeric| |
+|Alphanumeric||
+|Byte|✅|
+|Kanji||
+
 ----
 The word "QR Code" is registered trademark of DENSO WAVE Incorporated.<br>
 http://www.denso-wave.com/qrcode/faqpatent-e.html
diff --git a/setup.cfg b/setup.cfg
index d82df4f..5086838 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = rmqrcode
-version = 0.1.0
+version = 0.1.1
 author = Takahiro Tomita
 author_email = ttp8101@gmail.com
 description = An rMQR Code Generetor