Update libaxtls.a to 324c2fd

Changelog:
324c2fd Terminate connection if increase_bm_data_size fails
96fbb39 Update README.md
c18bb56 Add travis CI
9eaeca3 Postpone freeing of X509 context to the first data exchange after handshake
28869ea Use free followed by malloc instead of realloc when increasing raw buffer
43a90bc Merge pull request #8 from slaff/feature/lwipr-compat
66e1a5f Merge pull request #7 from slaff/feature/sni
1154d0a Changed the code to reserve bytes for hostname only if needed.
63da899 Added SNI ( https://en.wikipedia.org/wiki/Server_Name_Indication ) support.
7c38865 Restructured the lwip raw comat code. Added replacements for the time functions on ESP8266.
885ff3e Merge pull request #6 from slaff/feature/lwip-raw
d78e7a0 Initial version of axTLS integration with lwip raw tcp mode (http://lwip.wikia.com/wiki/Raw/TCP).

Author: igrr