fixed typo

README.md

@@ -4,7 +4,7 @@
 @cond TURN_OFF_DOXYGEN
 -->
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+[![LoC](https://tokei.rs/b1/github/skypjack/entt)](https://github.com/skypjack/entt)
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TODO

@@ -15,3 +15,4 @@
 * AOB
 * lower case names (?)
 * tag_t and the others, create constexpr var
+* use delegate within sink, it reduces the boilerplate in C++14, it shrinks the API of sink in C++17