Update readme (#1978)

README.md

@@ -21,6 +21,8 @@
 ![GithubActions](https://github.com/coqui-ai/TTS/actions/workflows/zoo_tests.yml/badge.svg)
 [![Docs](<https://readthedocs.org/projects/tts/badge/?version=latest&style=plastic>)](https://tts.readthedocs.io/en/latest/)
 
+🚀 [**Sign up to free 🐸Coqui.ai API and start cloning your voice**](https://coqui.ai/)
+
 📰 [**Subscribe to 🐸Coqui.ai Newsletter**](https://coqui.ai/?subscription=true)
 
 📢 [English Voice Samples](https://erogol.github.io/ddc-samples/) and [SoundCloud playlist](https://soundcloud.com/user-565970875/pocket-article-wavernn-and-tacotron2)
@@ -75,7 +77,7 @@ Underlined "TTS*" and "Judy*" are 🐸TTS models
 - Modular (but not too much) code base enabling easy implementation of new ideas.
 
 ## Implemented Models
-### Text-to-Spectrogram
+### Spectrogram models
 - Tacotron: [paper](https://arxiv.org/abs/1703.10135)
 - Tacotron2: [paper](https://arxiv.org/abs/1712.05884)
 - Glow-TTS: [paper](https://arxiv.org/abs/2005.11129)
@@ -84,6 +86,7 @@ Underlined "TTS*" and "Judy*" are 🐸TTS models
 - FastPitch: [paper](https://arxiv.org/pdf/2006.06873.pdf)
 - FastSpeech: [paper](https://arxiv.org/abs/1905.09263)
 - SC-GlowTTS: [paper](https://arxiv.org/abs/2104.05557)
+- Capacitron: [paper](https://arxiv.org/abs/1906.03402)
 
 ### End-to-End Models
 - VITS: [paper](https://arxiv.org/pdf/2106.06103)
@@ -149,12 +152,12 @@ If you are on Windows, 👑@GuyPaddock wrote installation instructions [here](ht
     ```
 - Get model info (for both tts_models and vocoder_models):
     - Query by type/name:
-        The model_info_by_name uses the name as it from the --list_models. 
+        The model_info_by_name uses the name as it from the --list_models.
         ```
         $ tts --model_info_by_name "<model_type>/<language>/<dataset>/<model_name>"
         ```
         For example:
-        
+
         ```
         $ tts --model_info_by_name tts_models/tr/common-voice/glow-tts
         ```
@@ -162,16 +165,16 @@ If you are on Windows, 👑@GuyPaddock wrote installation instructions [here](ht
         $ tts --model_info_by_name vocoder_models/en/ljspeech/hifigan_v2
         ```
     - Query by type/idx:
-        The model_query_idx uses the corresponding idx from --list_models. 
+        The model_query_idx uses the corresponding idx from --list_models.
         ```
         $ tts --model_info_by_idx "<model_type>/<model_query_idx>"
         ```
         For example:
-        
+
         ```
-        $ tts --model_info_by_idx tts_models/3 
+        $ tts --model_info_by_idx tts_models/3
         ```
-        
+
 - Run TTS with default models:
 
     ```
@@ -241,8 +244,6 @@ If you are on Windows, 👑@GuyPaddock wrote installation instructions [here](ht
 |- TTS
     |- bin/             (folder for all the executables.)
       |- train*.py                  (train your target model.)
-      |- distribute.py              (train your TTS model using Multiple GPUs.)
-      |- compute_statistics.py      (compute dataset statistics for normalization.)
       |- ...
     |- tts/             (text to speech models)
         |- layers/          (model layer definitions)