Move docs to this repo and auto build

.gitignore

.travis.yml

.travis/build_docs.sh

.travis/update_docs.sh

README.md

openssl-sys/Cargo.toml

openssl-sys/src/lib.rs

openssl/Cargo.toml

openssl/src/asn1/mod.rs

openssl/src/bio/mod.rs

openssl/src/bn/mod.rs

openssl/src/crypto/hash.rs

openssl/src/crypto/hmac.rs

openssl/src/crypto/memcmp.rs

openssl/src/crypto/mod.rs

openssl/src/crypto/pkcs5.rs

openssl/src/crypto/pkey.rs

openssl/src/crypto/rand.rs

openssl/src/crypto/symm.rs

openssl/src/lib.rs