Update README.md

Author: yuemingl

README.md

@@ -3,9 +3,9 @@ SymJava is a Java library for symbolic-numeric computation.
 
 There are two interesting features:
 
-1. Operator Overloading is implemented by using https://github.com/amelentev/java-oo
+1. Operator Overloading is implemented by using Java-OO (https://github.com/amelentev/java-oo)
 
-2. "Lambdify" in sympy is implemented in SymJava by using BCEL library. The java Bytecode are generated in runtime for the symbolic expressions. Fast numerical evaluation is achieved.
+2. "Lambdify" in sympy is implemented in SymJava by using BCEL library. The java bytecode is generated at runtime for a symbolic expression. Fast numerical evaluation is achieved.
 
 SymJava is developed under Java 7 and Eclipse-Kepler (SR2 4.3.2, https://www.eclipse.org/downloads/packages/release/kepler/sr2)