pt: add page (#2246)

pages/common/pt.md

@@ -0,0 +1,24 @@
+# pt
+
+> Platinum Searcher.
+> A code search tool similar to `ag`.
+
+- Find files containing "foo" and print the files with highlighted matches:
+
+`pt {{foo}}`
+
+- Find files containing "foo" and display count of matches in each file:
+
+`pt -c {{foo}}`
+
+- Find files containing "foo" as a whole word and ignore its case:
+
+`pt -wi {{foo}}`
+
+- Find "foo" in files with a given extension using a regular expression:
+
+`pt -G='{{\.bar$}}' {{foo}}`
+
+- Find files whose contents match the regular expression, up to 2 folders deep:
+
+`pt --depth={{2}} -e '{{^ba[rz]*$}}'`