Merge pull request #175 from jianlin/master

add instructions

README.md

@@ -265,13 +265,13 @@ Open the "Build Settings" tab, in the "Linking" section, locate the "Other Linke
 
 ![Other Linker Flags](http://dl.dropbox.com/u/123346/SDWebImage/10_other_linker_flags.jpg)
 
-In the "Search Paths" section, locate "Header Search Paths" (and not "User Header Search Paths") and add two settings: ”$(TARGET_BUILD_DIR)/usr/local/lib/include” and ”$(OBJROOT)/UninstalledProducts/include”. Make sure to include the quotes here:
+In the "Search Paths" section, locate "Header Search Paths" (and not "User Header Search Paths") and add two settings: `”$(TARGET_BUILD_DIR)/usr/local/lib/include”` and `”$(OBJROOT)/UninstalledProducts/include”`. Double click on the <Multiple values> to pop out the box and click on the "+" icon to add each of them.  Make sure to include the quotes here:
 
 ![User Header Search Paths](http://dl.dropbox.com/u/123346/SDWebImage/11_user_header_search_paths.jpg)
 
 ### Import headers in your source files
 
-In the source files where you need to use the library, use ``#import <SDWebImage/HeaderFileName.h>``:
+In the source files where you need to use the library, import the header file:
 
 ```objective-c
 #import <SDWebImage/UIImageView+WebCache.h>