Add compatible MMSegmentation and MMCV version table. (open-mmlab#558)

Author: clownrat6

docs/get_started.md

@@ -7,6 +7,20 @@
 - GCC 5+
 - [MMCV](https://mmcv.readthedocs.io/en/latest/#installation)
 
+The compatible MMSegmentation and MMCV versions are as below. Please install the correct version of MMCV to avoid installation issues.
+
+| MMSegmentation version |    MMCV version     |
+|:-------------------:|:-------------------:|
+| master              | mmcv-full>=1.3.1, <1.4.0 |
+| 0.13.0              | mmcv-full>=1.3.1, <1.4.0 |
+| 0.12.0              | mmcv-full>=1.1.4, <1.4.0 |
+| 0.11.0              | mmcv-full>=1.1.4, <1.3.0 |
+| 0.10.0              | mmcv-full>=1.1.4, <1.3.0 |
+| 0.9.0               | mmcv-full>=1.1.4, <1.3.0 |
+| 0.8.0               | mmcv-full>=1.1.4, <1.2.0 |
+| 0.7.0               | mmcv-full>=1.1.2, <1.2.0 |
+| 0.6.0               | mmcv-full>=1.1.2, <1.2.0 |
+
 Note: You need to run `pip uninstall mmcv` first if you have mmcv installed.
 If mmcv and mmcv-full are both installed, there will be `ModuleNotFoundError`.