Merge pull request #6 from wnuqui/docs/fixes

Typos and reformatting

Author: wnuqui

README.md

@@ -27,7 +27,7 @@ import Presence
 ```
 to the top of the module where you will be working with Presence module. We `import` to easily access functions from modules implementing `Presence` protocol without using the fully-qualified name.
 
-These functions are `is_blank/1`, `is_present`, `presence`
+These functions are `is_blank/1`, `is_present/1`, `presence/1`
 
 Few examples below:
 
@@ -64,15 +64,15 @@ nil
 ## Current Implementation
 
 Presence is a Protocol that is currently implemented by the following:
-* Atom
-* List
-* BitString
-* Map
-* Tuple
+- `Atom`
+- `BitString`
+- `List`
+- `Map`
+- `Tuple`
 
 Other modules can implement the Protocol by defining these functions:
 - `is_blank/1`
-- `is_preent/1`
+- `is_present/1`
 - `presence/1`
 
 ## Inspiration

lib/presence.ex

@@ -11,8 +11,8 @@ defprotocol Presence do
   Currently, these modules implements `Presence` protocol.
 
     - `Atom`
-    - `List`
     - `BitString`
+    - `List`
     - `Map`
     - `Tuple`
 
@@ -22,13 +22,13 @@ defprotocol Presence do
   A value is blank if it's nil, false, empty, or a whitespace string.
 
   For example
-    - `false`
-    - `''`
-    - `'   '`
     - `nil`
+    - `false`
     - `[]`
     - `%{}`
     - `{}`
+    - `''`
+    - `'   '`
 
   are all blank.
 
@@ -122,7 +122,7 @@ defprotocol Presence do
 
   becomes
 
-      region = state.presence || country.presence || 'US'
+      region = presence(state) || presence(country) || 'US'
 
   """
   def presence(value)