v1.2.1

### Releases v1.2.1

1. Clean-up all compiler warnings possible.
2. Add Table of Contents

Author: khoih-prog

README.md

@@ -789,9 +789,13 @@ The following info is taken and modified from [SSLClient README](https://github.
 
 Using EthernetSSLClient is similar to using any other Arduino-based Client class. There are a few extra things, however, that you will need to get started:
 
-1. **Board and Network Peripheral** - Your board should have a lot of resources (>110kb flash and >7kb RAM), and your network peripheral should have a large internal buffer (>7kb).
+##### 1. Board and Network Peripheral Requirements
 
-2. **Trust Anchors (TA)** - You will need a header containing array of trust anchors ([trust_anchors](examples/WebClient_SSL/trust_anchors.h)), which are used to verify the SSL connection later on. **This file must generated for every project if connecting to different TLS/SSL WebServers.** Check out [TrustAnchors.md](./TrustAnchors.md#generating-trust-anchors) on how to generate this file for your project, and for more information about what a trust anchor is.
+Your board should have a lot of resources (>110kb flash and >7kb RAM), and your network peripheral should have a large internal buffer (>7kb).
+
+##### 2. How to use Trust Anchors TA
+
+You will need a header containing array of trust anchors ([trust_anchors](examples/WebClient_SSL/trust_anchors.h)), which are used to verify the SSL connection later on. **This file must generated for every project if connecting to different TLS/SSL WebServers.** Check out [TrustAnchors.md](./TrustAnchors.md#generating-trust-anchors) on how to generate this file for your project, and for more information about what a trust anchor is.
 
 
 Once all those are ready, you can create an SSLClient object like this:
@@ -840,7 +844,9 @@ else
 }
 ```
 
-**Note**: `sslClient.connect("www.arduino.cc", 443)` can take 5-15 seconds to finish. This an unavoidable consequence of the SSL protocol, and is detailed in [Implementation Notes](#resources).
+##### 3. Note
+
+`sslClient.connect("www.arduino.cc", 443)` can take 5-15 seconds to finish. This an unavoidable consequence of the SSL protocol, and is detailed in [Implementation Notes](#resources).
 
 For more information on `EthernetSSLClient`, check out the [examples](./examples), [API documentation](https://openslab-osu.github.io/SSLClient/index.html), or the rest of this README.
 
@@ -1049,10 +1055,6 @@ If for some unfortunate reason you need SSL 3.0 or SSL 2.0, you will need to mod
 
  * When using PubSubClient on the ESP32, a stack overflow will occur if the user does not flush the buffer immediately after writing. The cause of this issue is under active investigation. More information in issue [PubSubClient on ESP32 overflows the stack](https://github.com/OPEnSLab-OSU/SSLClient/issues/9).
 
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