updated readme.md and using tab char for formatting with node

plugins/jsontools/README.md

 # jsontools
 
-A handy command line tool for dealing with json data.
+Handy command line tools for dealing with json data.
+
+## Tools
+
+- **pp_json** - pretty prints json
 
 ## Usage
 
+##### pp_json - examples
+
 ```sh
 # curl json data and pretty print the results
 curl https://coderwall.com/bobwilliams.json | pp_json
@@ -12,4 +18,5 @@ curl https://coderwall.com/bobwilliams.json | pp_json
 less data.json | pp_json
 
 # json data directly from the command line
-echo '{"b":2, "a":1}' | pp_json
\ No newline at end of file
+echo '{"b":2, "a":1}' | pp_json
+```
\ No newline at end of file

plugins/jsontools/jsontools.plugin.zsh

@@ -6,7 +6,7 @@ if [[ $(whence $JSONTOOLS_METHOD) = "" ]]; then
 fi
 
 if [[ $(whence node) != "" && ( "x$JSONTOOLS_METHOD" = "x"  || "x$JSONTOOLS_METHOD" = "xnode" ) ]]; then
-    alias pp_json='node -e "console.log(JSON.stringify(JSON.parse(process.argv[1]), null, 4));"'
+    alias pp_json='node -e "console.log(JSON.stringify(JSON.parse(process.argv[1]), null, '\t'));"'
 elif [[ $(whence python) != "" && ( "x$JSONTOOLS_METHOD" = "x" || "x$JSONTOOLS_METHOD" = "xpython" ) ]]; then
 	alias pp_json='python -mjson.tool'
 elif [[ $(whence ruby) != "" && ( "x$JSONTOOLS_METHOD" = "x" || "x$JSONTOOLS_METHOD" = "xruby" ) ]]; then