Merge pull request #12 from lucdion/renamed_align_enums

Replace the unique Align enumeration by three enumerations:

Author: Luc Dion

FlexLayout.podspec

@@ -1,7 +1,7 @@
 
 Pod::Spec.new do |s|
   s.name         = "FlexLayout"
-  s.version      = "1.1.0"
+  s.version      = "1.1.1"
   s.summary      = "FlexLayout"
 
   s.homepage     = "https://github.com/lucdion/FlexLayout.git"

README.md

@@ -533,7 +533,7 @@ The `alignItems` property defines how flex items are laid out along the cross ax
 **Method:**
 
 * **`alignSelf(_: Align)`**  
-The `alignItems` property controls how a child aligns in the cross direction, overriding the `alignItems` of the parent. For example, if children are flowing vertically, `alignSelf` will control how the flex item will align horizontally. 
+The `alignSelf` property controls how a child aligns in the cross direction, overriding the `alignItems` of the parent. For example, if children are flowing vertically, `alignSelf` will control how the flex item will align horizontally. 
 
   The `auto` value means use the flex container `alignItems` property. See `alignItems` for documentation of the other values.