[build] Mac OS build using upgraded openssl library

Signed-off-by: Leo Chen <leo@harmony.one>

README.md

@@ -16,13 +16,14 @@ http://api.hmny.io/
 
 ## Requirements
 
-### **Go 1.14.1**
+### **Go 1.14.7**
 ### **GMP and OpenSSL**
 
 On macOS:
 ```bash
 brew install gmp
 brew install openssl
+sudo ln -sf /usr/local/opt/openssl@1.1 /usr/local/opt/openssl
 ```
 On Linux (Ubuntu)
 ```bash

scripts/go_executable_build.sh

@@ -37,7 +37,7 @@ if [ "$(uname -s)" == "Darwin" ]; then
    LIB[libmcl.dylib]=${MCL_DIR}/lib/libmcl.dylib
    LIB[libgmp.10.dylib]=/usr/local/opt/gmp/lib/libgmp.10.dylib
    LIB[libgmpxx.4.dylib]=/usr/local/opt/gmp/lib/libgmpxx.4.dylib
-   LIB[libcrypto.1.0.0.dylib]=/usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib
+   LIB[libcrypto.1.1.dylib]=/usr/local/opt/openssl/lib/libcrypto.1.1.dylib
 else
    MD5=md5sum
    LIB[libbls384_256.so]=${BLS_DIR}/lib/libbls384_256.so