Fix typos

Thanks to https://github.com/omahs for #2784

libraries/README.md

@@ -1,8 +1,8 @@
 # BitShares Libraries
 
-The libraries are the core of the project and defines everything where applications can build on top.
+The libraries are the core of the project and define everything where applications can build on top.
 
-A **graphene** blockchain software will use the `app` library to define what the application will do, what services it will offer. The blockchain is defined by the `chain` library and include all the objects, types, operations, protocols that builds current consensus blockchain. The lowest level in memory database of Bitshares is developed at the `db` library. The `fc` is a helper module broadly used in the libraries code, `egenesis` will help with the genesis file, `plugins` will be loaded optionally to the application. Wallet software like the cli_wallet will benefit from the `wallet` library.
+A **graphene** blockchain software will use the `app` library to define what the application will do, what services it will offer. The blockchain is defined by the `chain` library and includes all the objects, types, operations, protocols that build current consensus blockchain. The lowest level in memory database of Bitshares is developed at the `db` library. The `fc` is a helper module broadly used in the libraries code, `egenesis` will help with the genesis file, `plugins` will be loaded optionally to the application. Wallet software like the cli_wallet will benefit from the `wallet` library.
 
 Code in libraries is the most important part of **bitshares-core** project and it is maintained by the Bitshares Core Team and contributors.
 # Available Libraries