Merge pull request #2149 from wangkuiyi/fix_bug_find_Boost

Have to capitalize Boost in find_package

paddle/CMakeLists.txt

@@ -9,7 +9,7 @@ add_subdirectory(pserver)
 add_subdirectory(trainer)
 add_subdirectory(scripts)
 
-find_package(boost QUIET)
+find_package(Boost QUIET)
 
 if(Boost_FOUND)
   include_directories(${Boost_INCLUDE_DIRS})