Fix compilation warnings (#216)

* Fix deprecated os_memmove warning

Switched to the standard memmove function

* Fix get_network_ticker implicit declaration warning

Included the required missing header file

* Removed useless execution rights from Makefile

* Fix directory name in README

README.md

@@ -20,7 +20,7 @@ First [install yarn](https://classic.yarnpkg.com/en/docs/install/#debian-stable)
 Open `tests/build_local_test_elfs.sh` and add your BOLOS SDKs path to `NANOS_SDK` and `NANOX_SDK`.
 This helper script will build the applications required by the test suite and move them at the right place.
 ```
-cd test
+cd tests
 ./build_local_test_elfs.sh
 ```
 Then you can install the project by simply running:

src/eth_plugin_handler.c

@@ -2,6 +2,7 @@
 #include "eth_plugin_handler.h"
 #include "eth_plugin_internal.h"
 #include "shared_context.h"
+#include "network.h"
 
 void eth_plugin_prepare_init(ethPluginInitContract_t *init, uint8_t *selector, uint32_t dataSize) {
     memset((uint8_t *) init, 0, sizeof(ethPluginInitContract_t));

src/main.c

@@ -411,7 +411,7 @@ void handleGetWalletId(volatile unsigned int *tx) {
     // pubkey -> sha512
     cx_hash_sha512(pub.W, sizeof(pub.W), t, sizeof(t));
     // ! cookie !
-    os_memmove(G_io_apdu_buffer, t, 64);
+    memmove(G_io_apdu_buffer, t, 64);
     *tx = 64;
     THROW(0x9000);
 }