Adding delete command documentation

mkdocs/delete.md

@@ -0,0 +1,63 @@
+```
+yq d <yaml_file|json_file> <path_to_delete>
+```
+{!snippets/works_with_json.md!}
+
+### To Stdout
+Given a sample.yaml file of:
+```yaml
+b:
+  c: 2
+  apples: green
+```
+then
+```bash
+yq d sample.yaml b.c
+```
+will output:
+```yaml
+b:
+  apples: green
+```
+
+### From STDIN
+```bash
+cat sample.yaml | yq d - b.c
+```
+
+### Deleting array elements
+Given a sample.yaml file of:
+```yaml
+b:
+  c: 
+    - 1
+    - 2
+    - 3
+```
+then
+```bash
+yq d sample.yaml 'b.c[1]'
+```
+will output:
+```yaml
+b:
+  c:
+  - 1
+  - 3
+```
+
+### Deleting nodes in-place
+Given a sample.yaml file of:
+```yaml
+b:
+  c: 2
+  apples: green
+```
+then
+```bash
+yq d -i sample.yaml b.c
+```
+will update the sample.yaml file so that the 'c' node is deleted
+
+
+{!snippets/keys_with_dots.md!}