Fixed typos.

README.md

@@ -14,7 +14,7 @@ so, I made it.
 
 ## Vision
 
-It's a launcher with strict syntax (like terminal programs), it's not targeting to interpret natrual language.  
+It's a launcher with strict syntax (like terminal programs), it's not targeting to interpret natural language.  
 I believe the strict syntax can provide more powerful and fast response than to interpret natural language.
 
 ## Features
@@ -27,7 +27,7 @@ I believe the strict syntax can provide more powerful and fast response than to
 Go to [Releases](https://github.com/hainproject/hain/releases), then you can download prebuilt binaries.
 
 ## Usage
-Run and press `alt+space` anywhere
+Run and press `alt+space` anywhere.
 
 ## How to make Plugins
 
@@ -69,7 +69,7 @@ gulp build-darwin
 ```
 
 ## Contributing
-See [CONTRIBUTING.md](CONTRIBUTING.md)  
+See [CONTRIBUTING.md](CONTRIBUTING.md)
 
 ## Credits
 The name "Hain" is named by Hyunseop Lee, it means "a Servant" in Korean.  

app/main/worker/plugin-loader.js

@@ -108,7 +108,7 @@ module.exports = () => {
         pluginConfigs[pluginId] = pluginConfig;
         logger.debug(`${pluginId} loaded`);
       } catch (e) {
-        logger.error(`${pluginId} could'nt be created: ${e.stack || e}`);
+        logger.error(`${pluginId} couldn't be created: ${e.stack || e}`);
       }
     }
     return { plugins, pluginConfigs };