Readme: left align table headers

[skip ci] [ci skip]

README.md

@@ -60,7 +60,7 @@ The functions
 The _first function_ is the setup and takes these settings:
 
 parameter      | type    | required | description
----------------|---------|----------|---------------------------------
+:--------------|:--------|:---------|:--------------------------------
 userId         | string  | yes      | Your Maxmind account user ID
 licenseKey     | string  | yes      | Your Maxmind account license key
 service        | string  | no       | The service you'd like to use: `insights`, `country`, `city` (default)
@@ -83,7 +83,7 @@ var geo = require ('geoip2ws') ({
 The _second function_ does the IP-address lookup and takes these arguments:
 
 parameter | type     | required | description
-----------|----------|----------|-----------------------------------
+:---------|:---------|:---------|:--------------------------------------------
 service   | string   | no       | The service, same as above
 ip        | string   | yes      | The IPv4 or IPv6 address to lookup
 callback  | function | yes      | Your callback `function` to receive the data
@@ -116,7 +116,7 @@ Response data: <http://dev.maxmind.com/geoip/geoip2/web-services/#Response_Body>
 #### Errors
 
 error message           | description                      | additional
-------------------------|----------------------------------|---------------------
+:-----------------------|:---------------------------------|:--------------------------
 no userId or licenseKey | You did not set your credentials |
 invalid service         | The service name is invalid      | no credits used
 invalid ip              | The IP-address is invalid        | no credits used