Update screenshot

README.md

@@ -65,7 +65,7 @@ Type `procs` only. It shows the information of all processes.
 $ procs
 ```
 
-![procs](https://user-images.githubusercontent.com/4331004/51976289-9f3a4a00-24c7-11e9-8573-8f746ccf1ed4.png)
+![procs](https://user-images.githubusercontent.com/4331004/55446625-5e5fce00-55fb-11e9-8914-69e8640d89d7.png)
 
 ### Search by non-numeric keyword
 
@@ -75,7 +75,7 @@ If you add any keyword as argument, it is matched to `USER`, `Command`, `Docker`
 $ procs zsh
 ```
 
-![procs_zsh](https://user-images.githubusercontent.com/4331004/51976319-b24d1a00-24c7-11e9-8060-09e71d18e5ec.png)
+![procs_zsh](https://user-images.githubusercontent.com/4331004/55446648-71729e00-55fb-11e9-8e12-1ca63911c568.png)
 
 ### Search by numeric keyword
 
@@ -86,7 +86,7 @@ Numeric is treated as exact match, and non-numeric is treated as partial match b
 $ procs --or 6000 60000 60001 16723
 ```
 
-![procs_port](https://user-images.githubusercontent.com/4331004/51976347-c09b3600-24c7-11e9-8d40-2c437efbd5e1.png)
+![procs_port](https://user-images.githubusercontent.com/4331004/55446667-83ecd780-55fb-11e9-8959-53209837c4ee.png)
 
 Note that procfs permissions only allow identifying listening ports for processes owned by the current user, so not all ports will show up unless run as root.
 
@@ -109,7 +109,7 @@ If you have access permission to docker daemon ( `unix:///var/run/docker.sock` )
 $ procs growi
 ```
 
-![procs_docker](https://user-images.githubusercontent.com/4331004/52265847-4d3a6e00-2978-11e9-8186-ea8e934acbb1.png)
+![procs_docker](https://user-images.githubusercontent.com/4331004/55446681-91a25d00-55fb-11e9-943d-5b5caeb23c62.png)
 
 Note that procs gets the container information through UNIX domain socket, so [Docker Toolbox](https://docs.docker.com/toolbox/) on macOS ( doesn't use UNIX domain socket ) is not supported.
 [Docker Desktop for Mac](https://docs.docker.com/docker-for-mac/) is supported but not tested.
@@ -128,6 +128,12 @@ The update interval can be specified by the option argument.
 
 If `--tree` option is used, processes are sorted by dependency order and dependency tree is shown at left side.
 
+```console
+$ procs --tree
+```
+
+![procs_tree](https://user-images.githubusercontent.com/4331004/55446692-9ff07900-55fb-11e9-8b66-a8432df0a8e1.png)
+
 ### Sort column
 
 Column sort order can be changed by `--sorta` or `--sortd` option.
@@ -141,6 +147,12 @@ The keyword is matched partially and case is ignored.
 
 The default sort is specified by `[sort]` section in the [configuration file](#configuration).
 
+```console
+$ procs --sortd cpu
+```
+
+![procs_sort](https://user-images.githubusercontent.com/4331004/55446704-ab43a480-55fb-11e9-81dc-e3ac1a1e2507.png)
+
 ### Insert column
 
 `--insert` option inserts new column to the position of `Slot` column.