add output info to docs

docs/parsers/env.md

@@ -2,6 +2,8 @@
 # jc.parsers.env
 jc - JSON CLI output utility `env` command output parser
 
+This parser will output a list of dictionaries each containing `name` and `value` keys. If you would like a simple dictionary output, then use the `-r` command-line option or the `raw=True` argument in the `parse()` function.
+
 Usage (cli):
 
     $ env | jc --env

docs/parsers/history.md

@@ -2,6 +2,8 @@
 # jc.parsers.history
 jc - JSON CLI output utility `history` command output parser
 
+This parser will output a list of dictionaries each containing `line` and `command` keys. If you would like a simple dictionary output, then use the `-r` command-line option or the `raw=True` argument in the `parse()` function.
+
 Usage (cli):
 
     $ history | jc --history

jc/parsers/env.py

@@ -1,5 +1,7 @@
 """jc - JSON CLI output utility `env` command output parser
 
+This parser will output a list of dictionaries each containing `name` and `value` keys. If you would like a simple dictionary output, then use the `-r` command-line option or the `raw=True` argument in the `parse()` function.
+
 Usage (cli):
 
     $ env | jc --env

jc/parsers/history.py

@@ -1,5 +1,7 @@
 """jc - JSON CLI output utility `history` command output parser
 
+This parser will output a list of dictionaries each containing `line` and `command` keys. If you would like a simple dictionary output, then use the `-r` command-line option or the `raw=True` argument in the `parse()` function.
+
 Usage (cli):
 
     $ history | jc --history