Adding hive-up.tml config file, db auto creation, and a bit of refactoring.

src/hive_config.rs

@@ -22,13 +22,13 @@ use serde::{Deserialize, Serialize};
 use std::fs;
 use toml;
 
-const CONFIG_PATH: &str = "/etc/hive_up.toml";
+const CONFIG_PATH: &str = "/etc/hive-up.toml";
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct HiveConfig {
     // Matches [kernel] in TOML
-    pub kernel: KernelConfig,
-    // Updates process config
+    pub kernel: Option<KernelConfig>,
+    // Updates [update] in TOML
     pub update: UpdateConfig,
 }
 
@@ -41,7 +41,7 @@ pub struct KernelConfig {
 #[derive(Debug, Serialize, Deserialize)]
 pub struct UpdateConfig {
     /// Interval between updates check in hours. 0 - no auto check for updates.
-    pub updates_check_interval: u64,
+    pub check_interval: u64,
     /// Tells hive-up to automatically download updates when awailable.
     pub download_updates: bool,
     /// Tells hive-up to automatically perform updates during system reboot.