fix: Many changes to reduce false positives and more: (#11)

* made DIGITS more restrictive: only 4+ consecutive digits
* match NAME only in saluation and valediction contexts
* company names are not really sensitive to don't redact them
* add SSN pattern

.eslintrc

@@ -1,5 +1,5 @@
 {
-  "env" {
+  "env": {
     "node": true,
     "es6": true
   },

README.md

@@ -14,8 +14,8 @@ npm install redact-pii
 
 ```js
 var redactor = require('redact-pii')();
-var redacted = redactor.redact('Hey it\'s David Johnson with ACME Corp. Give me a call at 555-555-5555');
-// Hey it's NAME with COMPANY. Give me a call at PHONE_NUMBER
+var redacted = redactor.redact('Hi David Johnson, Please give me a call at 555-555-5555');
+// Hi NAME, Please give me a call at PHONE_NUMBER
 ```
 
 ## API
@@ -24,19 +24,19 @@ var redacted = redactor.redact('Hey it\'s David Johnson with ACME Corp. Give me
 * `options` {Object}
   * `replace` {String|Function} If a string, the value will be used as the replacement for all identified patterns. If a function, the function will be called with the name of each pattern to determine the replacement value for the pattern.
   * `*` {RegExp|`false`} Any other key in options will be treated as a regular expression to use for replacing matches, `false` if no replacement is desired for a particular pattern. The following patterns are enabled by default.
-    * company
     * credentials
     * creditCardNumber
     * emailAddress
     * ipAddress
     * name
     * password
     * phoneNumber
-    * salutation
     * streetAddress
     * username
-    * valediction
+    * ssn
     * zipcode
+    * url
+    * digits
 
 ### redactor.redact(text)
 * `text` {String} The text which contains PII to redact
@@ -47,8 +47,8 @@ var redacted = redactor.redact('Hey it\'s David Johnson with ACME Corp. Give me
 ### Replacement Values
 ```js
 var redactor = require('redact-pii')({replace: 'TOP_SECRET'});
-redactor.redact('David Johnson lives at 42 Wallaby Way');
-// TOP_SECRET lives at TOP_SECRET
+redactor.redact('Dear David Johnson, I live at 42 Wallaby Way');
+// Dear TOP_SECRET, I live at TOP_SECRET
 
 var redactor = require('redact-pii')({
   replace: function (name, defaultReplacement) {
@@ -66,8 +66,8 @@ redactor.redact('my CC is 1234567812345678');
 ### Patterns
 ```js
 var redactor = require('redact-pii')({name: false});
-redactor.redact('David Johnson lives at 42 Wallaby Way');
-// David Johnson lives at STREET_ADDRESS
+redactor.redact('Dear David Johnson, I live at 42 Wallaby Way');
+// Dear David Johnson, I live at STREET_ADDRESS
 
 
 var redactor = require('redact-pii')({animal: /\b(cat|dog|cow)s?\b/gi});