Sha2-224 Packages

how to import: ``` const sha2_224 = require('simple-js-sha2-224') ``` hashing: ``` sha2_224('hello') // ea09ae9cc6768c50fcee903ed054556e5bfc8347907f12598aa24193 ``` performance: 77.8 kh/s ~ (Core I7-7920HQ single thread)

simple js sha2 implementation (includes 224bit, 256bit, 384bit, 512bit)