Spanish and Catalan locale files added (#28)

* Spanish and Catalan locales added
* "Search data" string localized

Author: Jo3l

src/DataTable.vue

@@ -32,7 +32,7 @@
 		<div v-if="this.searching">
 			<div id="search-input-container">
 				<label>
-					<input type="search" id="search-input" class="form-control" placeholder="Search data"
+					<input type="search" id="search-input" class="form-control" :placeholder="lang['search_data']"
 						:value="searchInput"
 						@input="(e) => {this.searchInput = e.target.value}">
 				</label>

src/locales/ar.json

@@ -2,5 +2,6 @@
 	"rows_per_page": "عدد النتائج كل صفحة",
 	"out_of_pages": "من أصل",
 	"all": "الكل",
-	"__is_rtl": true
-}
+	"__is_rtl": true,
+	"search_data": "Search data"
+}

src/locales/cat.json

@@ -0,0 +1,6 @@
+{
+	"rows_per_page": "Files per pàgina",
+	"out_of_pages": "de",
+	"all": "Totes",
+	"search_data": "Buscar dades"
+}

src/locales/en.json

@@ -1,5 +1,6 @@
 {
 	"rows_per_page": "Rows per page",
 	"out_of_pages": "of",
-	"all": "All"
-}
+	"all": "All",
+	"search_data": "Search data"
+}

src/locales/es.json

@@ -0,0 +1,6 @@
+{
+	"rows_per_page": "Filas por página",
+	"out_of_pages": "de",
+	"all": "Todas",
+	"search_data": "Buscar datos"
+}

src/locales/index.js

@@ -1,4 +1,6 @@
 module.exports = {
 	en: require('./en.json'),
 	ar: require('./ar.json'),
-};
+	es: require('./es.json'),
+	cat: require('./cat.json')
+};