message: add TF compatibility to README.md
diff: @@ -85,6 +85,19 @@ if (!require("devtools")) install.packages("devtools")
  devtools::install_github("tensorflow/io", subdir = "R-package")
  ```
  +### TensorFlow Version Compatibility
  +
  +To ensure compatibility with TensorFlow, it is recommended to install a matching
  +version of TensorFlow I/O according to the table below:
  +
  +| TensorFlow I/O Version | TensorFlow Compatibility | Release Date |
  +| --- | --- | --- |
  +| 0.5.0 | 1.13.x | Apr 12, 2019 |
  +| 0.4.0 | 1.13.x | Mar 01, 2019 |
  +| 0.3.0 | 1.12.0 | Feb 15, 2019 |
  +| 0.2.0 | 1.12.0 | Jan 29, 2019 |
  +| 0.1.0 | 1.12.0 | Dec 16, 2018 |
  +
  ## Developing
  ### Python
  